Hey Lady Lola,
Thanks for posting and welcome to the forums.
I can only imagine the whirlwind of emotions that you and your daughter are experiencing. BPD is a tricky one for people to understand if they haven't had experience with it either through a friend, family member, or even personally. Luckily, there is a thread full of posts by individuals with BPD, and by loved ones of those with BPD which you can find on our Staying Well thread, called This Bipolar Life. Just a word of warning, there are A LOT of posts, so it may be overwhelming at first, but hopefully you find some helpful.