Hi K's mom,
I'm so sorry to hear that your health is suffering. Sadly, it's very common to have physical ailments when chaos and stress surround you. I'm glad you've reached out for support, suggestions, on how to have a conversation with your DD about your boundary, that she not live with you. Although your DD may feel abandoned, these are her feelings, not your intent. We can help you, offer suggestions on communicating the news, in hopes of the best possible outcome for you all.
Have you had a chance to check out our resources on communicating with a pwBPD? I'm learning that communication with my DD25 is different than with any other person in my life, and at first I was reluctant to "change" anything about how I talked to her. Once I got on board, I've had some success with tools like Listening with Empathy and Validation. Even though my relationship with my DD is the most challenging, the skills I'm learning here are helping with all my relationships. More importantly, having the skills helps me feel confident and less reactive, much better for my mental, and physical!, well being.
Here are some links that describe what I'm talking about. Let us know what you think and ask any questions at all. We are here for you, we know how difficult it can be to communicate without reacting.
Listen with EmpathyValidation Skill-Stop Invalidating OthersI'm also throwing out this link again,
Better Self Care.
Hang in there, K's mom, we've got you.
~ OH