警察啥也沒幫她，倒是他老公跟警察有說有笑，警察還查了她的綠卡，說快到期了。
-After she files I-751 waiver, she will be legally to stay in US and work even if the conditional green card expires. By the way, if her husband has any violence to her, keep the evidences such as picture of wound, hospital Doctor's examination, witness, etc. Don't be afraid to depend her personal safety and interests.
Read these links about I-751 waiver filing:
http://www.nwirp.org/Documents/FillingAnI-751Waiver.pdf
(Read "How to Get a Waiver of the Requirement to File a Joint Petition" part in the above USCIS website)
