Thanks guys so much. Wow, I don't know why I ever would leave PC, this community is incredible!
I read over my post and realized how ambiguous it was.. my sisters' troubles are mostly drug-related but my one sister, who I love dearly, decided to take to the roads and be homeless in New Orleans for a while. It's just a part of her self-destruction, though she wouldn't admit that she meant it as a self-destructive act. As you can imagine, it's very unsafe to be a homeless drug addict in New Orleans. Some really bad things happened.
Anyway, now she is back with my parents, so hopefully things will get better from here.
I am really happy about getting in to a PhD program though! I am just hoping to process things in therapy quickly since now I'll only be in the area near my T until August 1. Yikes -- what a timeline