EireneFaith

You are eligible to apply for Naturalization under the 5 year rule. Requirements you should provide are your Income Tax Return from IRS, copy of your green card. You are eligible because you are already 10 years LPR. If you apply under the 3 year rule you have to provide more documents being married to USC.

To be honest, I do think it is strange that they don’t have 1 single picture of the wedding? No matter how small the wedding. The reason of her parents not liking the man does not make any sense at all…
Did they think that all they needed was for the marriage to be legal? Legal does not equal bonafide

Just have her tell the truth. It's usually not hard to tell the truth unless the entire this is a lie. 

they asking them to tell the truth. because the CO said I know what you did

Just because it’s an official registered marriage that produced a valid marriage certificate doesn’t automatically mean that the marriage is bonafide. The consulate is suspecting that the marriage was not entered in good faith, i.e it was entered for sole purpose of obtaining immigration benefits. Your friend needs to find a way to convince them otherwise.

A Filipino applicant who can't provide a single picture of their wedding? A rare Pokemon indeed, in a country where people take pictures of themselves almost 24/7.

Nah, if your marriage (or anyone’s) has ripples, it’s not because of USCIS. 
If you’re a LPR it’s not like they can deport you if you don’t get in trouble. And there are circumstances you should absolutely avoid, like a DUI or a DV charge, but not just because of immigration, it’s because LIFE. I have a pending 751 and I’m able to live my life and do pretty much everything (except voting and applying for certain jobs and loans and whatnot)
Please point us to ONE Hacking video where he says so. I watch his shows every single day.

Well I do give you this much, VJ forums are more about anxiety than help, speaking from my first hand experience. However, my opinions about this particular topic are taken directly from the forum’s beloved lawyers, if logic isn’t something people trust in.
Perhaps you should look into some of Jim Hacking’s videos 

I know, but I just wanted to give some feedback on some of the statements you made. New forum members could get additional (unnecessary) anxiety when they read your statements. 
 

Well yes, getting a DUI or DV situation is never a good thing (for anybody, but especially for LPR's). But really, a LPR has a lot of control over their own status.
My application was approved (without any RFE's) in 6 months, but has been ready to be scheduled for an interview for that same amount of time. "Generally when your wait far exceeds the extension, there is a cause for concern" -> I think it all depends where the wait is, because if the application is missing something, the applicant would receive an RFE

But it's not like an LPR can be kicked out of the US just like that? I understand that being a USC is the 'safest' situation to be in, but it would take a lot to strip a LPR of their status. I am the immigrant (my husband is the USC) and yes, the fact that is takes so long is annoying for sure, but I am not living in fear of getting my LPR status taken away or anything. I am doing everything he does (except for voting or applying for a job at USCIS for example), so I am not feeling like I have to be super alert about something. 
 
 
 
 

It is taking a long time (I am over 1 year in myself and am not expecting much for another 6 months at least) but I wouldn't say it causes ripples in my marriage?
 
I am authorized to stay and work, so a less stressful situation that the horrible long wait for the initial application.
I filed, make sure that I get a stamp close to the expiration date of my extension letter and carry on with life as usual.

I see no need to get a stamp unless a person needs to travel or show proof of status.  Her status does not expire when the extension letter does.

Interesting series of events. Glad it worked out for your MIL.
 
But there is one problem I can see with your plan. The IO is in no way obligated to look at any supporting evidence. The OP stated that the IO at her father's interview had no interest to look at his evidence. So the OP can go through the effots of getting such documentation, but it still may be futile.
 
Seems you MIL was fortunate enough to get an IO that was willing to review evidence. Not everyone will have that luxury. 

This case is about to pass the smell's test.
 
Why would you petition her if husband is the dad? Even if you do adopt, while filing I-130 it asks where both parents live. Embassy will have a field day when they find out that dad is a USC and is where the young girl is headed to. Additionally, BC will list his name. Question from Embassy will be "why adopt your own daughter? He can easily file I-130."
 
Fire the attorney for even wanting to proceed with adoption yet the kid has a dad as explained above. 

If the mother of the child doesn't want to send her to the US, you will face issues anyway whether going via adoption or via your husband petitioning for her. If she is ok with it, your husband petitioning for her directly is much quicker than going thru adoption process.
 
Does she have a birth certificate listing the parents name? Has your husband been listing her as his daughter in all immigration forms when petitioning you? If so it would be  much easier. If none, DNA testing may be required.
 

Since you already live in the US , you cannot do a “ local “ Philippines adoption that would qualify for immigration filing because you won’t meet the 2 years physical and legal custody requirements , and inter country adoption per Hague Convention rules is complex, expensive , not DIY friendly and not fast.
https://travel.state.gov/content/travel/en/Intercountry-Adoption/Intercountry-Adoption-Country-Information/Philippines.html
 
Have your husband file the I-130 for the child as DNA is a fast process ( a few weeks at most) and he can submit DNA at filing instead of waiting for an RFE , as soon as you file the I-130 and have a case receipt number. 
https://cliniclegal.org/resources/family-based-immigration-law/frequently-asked-questions-about-dna-testing
 
 

Your husband petioning her as his daughter would be quickest. Not quick obviously this is a relative term.

I'm a little confused by your post. 
 
Your husband is the biological father of the child, correct?  If so, there is no need for you to adopt her to bring her to the US -- that will be a very long, difficult process.  As long as the mother agrees to her immigration, you can petition her as a step-daughter or your husband can petition her as she is his daughter -- IR-2 either way.  There may be a delay in the case to prove paternity (via DNA, if necessary), but it would still be faster than waiting for the adoption and meeting all of the immigration requirements.
 
Or have I completrly misunderstood the situation?

Your status does not expire when the 2 year card does.  Your authority to work does not expire. Your extension letter will extend the expiration date of the card for 2 years.  The extension letter explains that.  Even if the extension letter expires, your status does not expire.  At that point, you can make an appointment at USCIS for an ADIT stamp.  But that is a long time from now.
You are a legal resident.  You do not need an EAD...

1.  I would mail it when the window opens (not even one day before)... 90 days prior to the conditional card expiration.
2.  Your Green Card is full authorization to work.  It superseded the EAD.
3.  No.  See #2 above.
4.  See #2 above.  You are fully authorized to work in the US as a Green Card holder.

None of that sounds true, sorry.

Honestly, you don't need a lawyer. I had a lawyer, and they make so many mistakes that add extraordinary levels of stress. Not to mention they take thousands of dollars from you. 
 
This is how it will go down: you need to pay them and fill out an "intake sheet" with all biographical information about you, your wife, kids, etc. They will then ask you to compile all relevant evidence. They will then literally transcribe the info you provide them to the I-130 and I-130A. That's all they do. Then you will get charged again for them to transcribe that same info to DS-260 and I-864. Now, will it be done right? Not always; they may make typos or miss info and you may not even get a chance to review until after they sent the packet.
 
If you wanna throw money away try an American lawyer. They will need to fill out G-28 and I don't think they can if they aren't registered with a US State bar. 

Very true... but we have so much evidence that we know each other, from way back in years. I met Emily in June 2005!!! And we have been off and on together for so many years. For those who understand tribalism, it was the root cause of us not getting married. My family would not let me marry from her tribe! And I listen to my family - a big life mistake! But here we are again rejoined! Thanks so much for your recommendations!

“Technically”? Bro there’s no technically with immigration. It’s either Yes or No. and if she is your wife then you would be charged with fraud for lying and getting married again and doin an AOS. Not trying to be rude but your case is all over the place. I strongly recommend you clear your head completely of everything you think you know and start over. Start by accepting that it’s going to take at least 1.5 - 2 yes for them to come.