My sister moved in with me unexpectedly a few months ago. We have since learned she has BPD and bipolar. I honestly feel as though I am suffocating in my own home sometimes. I'm looking for support.
Hello Tandm,

What's going on in your home, and what sorts of behaviors are you struggling the most with? Self-harm on her part, or fits of anger? Physicality?
Who else lives there, and how is the house dynamic? I hope to hear more and how best we can support you.
Check out this to start:
bpdfamily.com about BPD (for Beginners)Turkish