So, what do you folks think? Should I trust my BPDw or not?
I think we need to help you redefine what trust means.
If that means that you trust her to behave appropriately... . then I would say no.
If you meant that you trust her to be honest about her feelings... . she may be able to do that. But you need to be aware that those feelings will be all over the place.
Remember... . feelings and facts get confused for pwBPD. Most nons find this very hard to deal with... . me especially... . what actually happened matters to me.
Hang in there and keep coming back to post more!