I've figured out that what doesn't work is dragging my feet on mediation and moving towards D.
Awesome. It's truly amazing the shift in attitudes with the LBS starts utilizing the WAS mentality, isn't it?
Hold your ground.
I hate to sound cynical but she could be wanting MC and/or to butter you up so that she gets a agood end of the mediation/separation deal. It is a possibility, so don't rule it out.
As for "ILY." Forget about that. Don't put too much emphasis. Words are just that -- words. Don't stress if she's not saying it to you.
The reality is this woman is full of drama, wants a separation agreement and has caused a lot of strife. Focus on that.
If you want MC, go for it but keep your expectations low. ACTIONS, not words, John.