US Immigration from China

My wife and I recently moved back to the US from China. I am a USC and she is a Chinese national with a CR1 green card. She has been in the US for 6 months. We would like to have her mother come and visit us. Her mother contacted a local visa agency in China to get help with her B2 application. They told her that since her daughter has a CR1 green card and has not been in the US for very long, her chances are low of obtaining a B2 visa and that if she applies now and is rejected, it might hurt her chances of obtaining a B2 visa in the future..

Is this sound advice? Should we try anyways?

I just got my NVC welcome letter few day ago, and i checked my CEAC status is ready after the day I got my NVC welcome letter. But right now, i checked my CEAC status is show "refused". Anyone encounter this situation? What should I do? And, any assistance can help me to better understand what is going on? Thank you very much.

Hi there, I recently received my Biometric Notification appointment along with a second page that has the Applicant's Information Worksheet form. I'm curious as to whether I should fill it out before to the Biometric appointment or once I've arrived at the appointment place.

The Guidance on the website doesn't offer much on what to include in the package to be sent in for Siblings. I was curious if anyone include anything out of the Guidance listed here and have success with it?

My wife and I are most likely looking at a divorce. It will probably be through mediation rather than court, so a judge won't likely be involved except to approve the decree. However, my wife came over on a K-1 visa and I am the i-864 sponsor listed on the petition. I understand that i-864 requires I support her to 125% of federal poverty levels. But I was hoping to get clarification.

Does the i-864 require I support her to 125% poverty level no matter if she is using government assistance or not?
Does the i-864 require that I support her financially if she is earning well above the poverty limit and even earning more than myself?

I would appreciate any clarification on what exactly the i-864 is requiring from me if/when my wife and I are officially divorced.