She is a person and though 90% of her issues are her own doing that she adamantly believes to be the fault of everyone around her, she still is a human and deserves validation from time to time.
How do you show empathy or sympathy? I'm scared that the minute I show that I care at all, I will be back in a terribly enmeshed and controlled relationship with her. I just need some suggestions on the proper balance.
That's a great question. You can feel empathy for someone and not agree with them or enable them. You're already familiar with boundaries; what kinds of boundaries could you set that allow you to express that empathy but not get sucked into drama?