Hi, pblsn2 &

I agree with lbjnltx... .Is there any way to attach some sort of reward or positive reinforcement to making her appointments? She still lives with you, right? I know she is 18, but actually my own adult son (36) used to balk at his appointments, and at times I have had to be pretty creative to just get him roused from bed in order to even leave the house for the appointments. I admit that it got easier once his car was totaled, and he had to rely on me to get him to his appointments. I basically don't take "No" for an answer (but, at this time he's in recovery and doesn't balk anymore).
I used to offer him his favorite cup of hot tea, or latte, when reminding him that he needed to get moving for the appointment. Not, "You need to wake up" but "What would you like this morning, tea or latte?" And, like lbjnltx, I'd casually mention "After the appointment I need to head on over to the mall; maybe you'd like to browse the Best Buy... ." or something else enticing to him. Maybe food, instead, like "I'd like to check out that new diner down the road from the Therapist, after the appointment... ."
It's tough when our child needs help, but isn't motivated or interested enough to actually get it. As parents, it seems we need to be pretty optimistic, radically accepting, and creative to keep them going sometimes... .Here are some links that could help:
Helping a loved one with BPD seek treatmentWhat can a parent do? (for parents of pwBPD)Radical Acceptance for family membersIf you've been reading about
Communication using validation, maybe using the
TOOLS: S.E.T. - Support, Empathy and Truth technique can help when talking to her about the need to go to her appointments. A sample of something I've used:
"I know you don't feel like getting up and going to see the Therapist today; it's a chilly grey day, and I can totally understand how much more inviting it is to stay curled up in a warm bed. To be honest with you, I didn't feel like getting out of bed today, myself! However, the appointment is in an hour, and I can make you either a cup of blackberry tea, or some mocha latte... .which would you like today? It'd be great to get moving now so there's time for you to drink it... ."
Just an idea; you know your daughter better than anyone, but maybe reading through the links I've posted above will give you some ideas that are better for you? Good luck!