jim, I agree with LH. it sounds like she isn't ready to give up the MR. Mainly because she would be ashamed for your sons to know. I saw that with my wife. Anytime talk turned to telling our daughter were divorcing she'd immediately start hedging.
WWs don't like to give things up. I think you said you're a lawyer. I'm guessing she doesn't make nearly as much money as you do. I bet you have a nice house. Drive nice cars. You can afford gym memberships. She'd be walking away from a sitch that most women would kill for.
Do not mistake not wanting to give up what she has for being ready to give up the OM. I've seen this movie before. She has been having her cake and eating it too. WWs doesn't like to stop cake eating.
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018