Hi Shodan, I'm sorry to hear you're finding things hard. People say piecing is hard. I hope one day to find out!!
I think the important thing here is that whatever you agree here has to work for you both. It is really important to you that there is full transparency here, and it isn't being offered.
So, it sounds reasonable for you to say - I'm not willing to do this - to put in the huge effort and faith in out M - without that.
If you carry on with the niceness and the ML - all of which is lovely, especially after what you've been through - but without this fundamental thing in place, things will unravel.
Plus, the whole thing about why she doesn't want to be fully transparent doesn't ring true. Whilst she clearly wants to work on things with you, is she also just wanting to leave a little 'chink' just in case OM gets in touch? It'll eat you up anyways....
Now, I'm no expert, and not a vet, but just offering my 0.02's worth..
T 13 M 7 Me 48 H 46 SS 15 BD 7.14 PA D final 5.16 (H filed)
We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus