Hi laura61, and welcome.

My, I'm so sorry for all that you've been through. What a painful journey. But I'm also glad that you've made your way here to BPD Family. I have been coming to this site on and off for a number of years now, and the information and support here have gotten me through some very tough times.
One of the best things is discovering that you're not alone... .that there are others who have gone through very similar (sometimes identical!) but bizarre experiences. My oldest and youngest daughters both suffer from BPD behaviors. Also my ex. Living with the Dr. Jekyl/Mr. Hyde behaviors really mess with your head.
Even though it's so hard and painful, you are at a crossroads right now. I applaud you for being able to say:
"I need to learn how to set boundaries and move forward from her because my emotional bank is empty.
So here I am. I love her but I need help."
Keep coming back and reading all that you can. Keep posting and asking questions. Check out the Message Boards and articles on raising a BPD Child:
https://bpdfamily.com/message_board/index.php?board=4.0Take care, laura61. You are in our thoughts tonight.
PictureLady