Who's to say that you confirm it is you (how can you do that, by the way? Tell me you aren't meeting her!), and after you confirm it's you she may STILL want the money??
Do you have a contract or something? I would not trust a cheating, lying, manipulative OW troll with anything. Just sayin'....
And my mom has been telling me that the day the OW comes out swinging and trying to get my attention is the day she realizes it is really over w/my H. Hasn't happened to me, but maybe that is what is happening to you. She has lost her grip on him so she wants to make sure you do, too.
I would give her zip zero nada response. She is looking for one and anything you give her, she feeds on. If she really wants to be left alone, why the repeated contact?