Hi daveexpf,
education is key.
1) Education yourself about boundaries. How do you protect yourself to be drawn back into a relationship - what are your boundaries. It is ok to get back (this is the staying board after all

) but it should be really your conscious decision.
2) Education yourself about validation and related communication tools like SET. She is suffering from anxiety and her fears need to be dealt with to some degree. It is very easy to put a positive spin into your talk and that is exactly what is to be avoided... .It is not hard but you got to know
how you say what you want to say.
3) She is alway going to want to back out when leaving time nears. Be clear about exactly what schedule. Be clear about what you do. You can't control her but you have a plan. This is the plan, you show up at that time etc. . It may still fail but what can you do. You only control yourself.

,
a0