ATPEACE

Oh but immigration does know your story, they see cases like this everyday, and it is called FRAUD. The only way out is to go back home before the 194 expires. Your situation is no different than anyone else from a 3rd world country. If you choose to stay, please remember these kind word, your life will never be your own, because you will always be looking over your shoulder to see if I.C.E. is behind you.
Good luck on whichever journey you chose.

As stated no, it will not work. The K1 visa ONLY allows your to adjust status with the person who petitioned you. You can marry your new bf if you want, but you will be unable to stay and adjust your status. You will have to leave the country and apply for a new visa. If you're married it will be a Cr-1 visa, if you're just engaged it's another K1. Be prepared for this new relationship to undergo a LOT of scrutiny given the circumstances surrounding your meeting.
It looks VERY suspicious that you happen to meet someone else while in the US on a K1 just DAYS after arriving, and then that in the span of 2 weeks of knowing you, you're both in love enough to marry? You also stated he felt "pity for you", that's not love so him offering to adjust your status is immigration fraud (not that it matters here but it's still fraud). Not to mention it's pretty obvious from your post that you went online with the explicit purpose of meeting someone else. It took you 2 weeks to move on from someone you APPARENTLY loved enough to apply for a K1... that alone looks suspicious.
** moved from "Adjustment of Status (Green Card) from Family Based Visas" to Effects of Major Family Changes on Immigration Benefits as this is a more appropriate location**

No, it will not work. You can only marry your petitioner on a K-1 visa in order to adjust status.
You can marry your boyfriend whenever you like, you must, however, return to your home country to apply for a visa
Good luck

Once you are a citizen a sibling petition for your home country takes about 20 years.

Why do you say that the Naturalization Eligibility Worksheet says she does not qualify for naturalization? Which worksheet are you using - the one in the Guide to Naturalization posted on USCIS?
As long as she has been a green card holder for 5 years; satisfies the physical presence and continuous residence requirements (no trip outside of the US for 1 year or longer in the last 5 years; and has not been outside of the US for 30 months or more in the last 5 years); is of good moral character, reads and writes English, and can take the Civics exam, she is eligible to apply.
She is not applying based on her marriage to a US citizen since she is not married to a US citizen. She is applying based upon her permanent residence status that she received 5 years ago when sponsored by her father. She just ignores the conditions for Application through Marriage and applies for Application through 5 years as a Permanent Resident. It is an either/or situation.
http://www.uscis.gov/files/article/attachments.pdf

Awarded "most succinct and relevant response".
I noticed a couple of red flags, Bob23. My best friend from work was Chinese and I had a lot of interaction with Chinese students as graduate director at a University here. Occasionally we would see one with the same attitude:
Someone has a bigotry issue.
It's pretty hard to adapt to a place where you hate the people. Remember that you are also an American so when you say she looks down on "all Americans" you might want to consider that.
I agree with PumpkinPie too - you sure sound like a considerate guy, yet nothing seems good enough for her. That's an attitude problem, not a culture problem.
Personally, I would be thinking about whether this is a person I would want to marry as opposed to whether I can move heaven and earth to please them. You can't work hard enough to please someone that has that kind of attitude.
You can, however, lay it on the line and tell them that adapting to life here is a requirement and if they don't want to do it then it is time for an amicable parting.

You seem so angry Paul, whats the matter? Did you put your g-string on backwards again today?
I imagine anyone who has any sort of shorterend immigration process be it legal or not would draw your ire.

This is something which is unique to VJ. There is an understandable preference on this site to clearly distinguish between an EWI and and an overstay because the distinction has a big impact on the immigration possibilities. However, I've seen a lot of people admonish others that someone who is EWI is "illegal" and someone who has overstayed is not. This is misleading, and it has no basis in immigration law.
"Illegal" means contrary to the law. An EWI has entered the US illegally, but both an EWI and and overstay are without lawful presence, which is illegal. Immigration law does not define the term "illegal alien", though the term is used a few times in title 8 of the Code of Federal Regulations as a general reference to someone who is without lawful presence. Several dictionaries, including Webster, define the term as describing both EWI's and overstays, and the term is commonly used outside of this forum to describe anyone without lawful presence.
Again, I understand the desire to make a distinction. Entering without inspection is an overt and intentional violation of immigration law, while overstaying is often not intentional and due to unavoidable circumstances. But I think it is misleading to tell someone that an overstay is not "illegal". If you told an immigration officer "I'm not illegal! I just overstayed my visa!" they would laugh at you.