So I will wait this out ... .while figuring out how to motivate or leverage her to move.
Boundaries. So vital. No so much to make her do something but for you. After all, you couldn't get anywhere trying to reason with her before, why would she start now? YOU set YOUR boundaries that YOU maintain. If you appear too reasonable or accommodating (in her mind, weak) then she may feel enabled to keep sabotaging mediation, housing, nesting, whatever.