Sorry you are having such a rough day. Are you taking the meds as prescribed yet? Can you call your T and let them know how you feel? Call a crisis line? Go to the hospital? Your sisters birthday seem to really trigger you. That sometimes happens in families, things that are said and done hurts more when it comes from someone you love. Sometime drastic measures is what's needed to keep peace. Hopefully at some point she will realize that you were just trying to help the kids and no need to keep a distance. You can't control what other people think or do, ya know. You know you did the right thing, you did nothing wrong.
Besides how can you think about leaving me? We've gone through some hard times together here at PC. We seem to gain strength from the support here and make it another day. Please call your T, Crisis Line, or go to the hospital. I really don't want to lose you.