You really need to discuss this issue with your lawyer. If you have none you need to hire one. If you are eligible for maintenance living with...

Can she take my last name back or does she have to take her maiden name

Your last name was once her last name . Yes she may resume a previous name.

It is possible because the person has an interest in the business account as s signor on the account. If the signor can withdraw funds then yes...

Is there anything i can do?

It is good that you are concerned but your mother needs to get involved and consult a lawyer.

What are the proper steps to file for the relocation, and does she have a case against us in the matter?

Relocation is a complex matter. Consult a family lawyer immediately. This isn't necessarily a cake walk. Yes you can negotiate usually but you...

Is there anything I can do here in the States to help complete divorce? Can I get a divorce in US if it was never registered?

You don't qualify for s US divorce if neither party lives here.

What or how do I do to be able to obtain all rights?

You basically have all rights because he is deported and not coming back. He will always be the biological father but he has no legal rights...

Is it possible to change the Judge in a Divorce Case after the Trial Date has been set?

Your cousin's sister needs to ask these questions of her lawyer. You are asking based on third hand information.

Would I have to pay child support if my son wants to voluntarily live with his father and how would a judge rule in this case?

Yes you would have to pay child support. But hold on a moment you are jumping the gun here. A 13 year old does not get to decide where he lives....

What is the process to make a legal separation into a divorce in Illinois?

This is a complicated issue you present here and much better discussed in the privacy if am lawyer's office. Most lawyers will advise that' Legal...