Re:
To "thismybest",
I am not a lawyer, but I believe your situation is what we call a catch22 in the sense that it seems like you are walking on a thin, and slippery line here, and most situations such as yours don't normally fair well in immigration matters especially under current immigration laws. The problems that led to the separation in your marriage may not be your fault but the INS don't know that. If this lady turns you in to the INS either by writing to them, or going to their office in person,or decides to be uncooperative, you might have lots of INS headaches to deal with ranging from arrest, dention, and possible deportation on one hand. So, you really have a lot to think about. You might want to start putting some dollars together for any possible INS legal battle incase it goes to deportation hearing.
On the other hand,you need to hire an immigration attorney before time runs out on you to seek advice. The response to part 2 of your question is: take care of part one of your issues first.