Hi Mwel I am glad to hear that today is going good for you. That is always a good sign. I say you have a good plan of asking for them once she serves you with the papers. I think that is fair and reasonable to ask for the rings back then and offer to give her yours. I mean if you are still paying for them then you should get them back.
Well I hope that she will go with you but it may not work and she may end up mad at your mother in law for getting involved. Be careful involving the in laws in your problems since it is their daughter and more than likely in the end they will be on her side not yours. Also probably most of what you say to them will be repeated back to her not in a malice way and they may think they are helping but still be careful as it could undo all the good you have done.