well, it sounds like she needs to go to a doctor to get diagnosed. Something is wrong, she sounds very impulsive and that can be a real bad thing, especially if it escalates. Just be there for her and try to get her to go to the doctor, don't tell her what you think she might have, let a doctor. Or, if you can get her into a dr. maybe you can she him/her first and tell them your concerns, incase she is not honest with them. But it is hard to totally hide a mental illness, though some can. I wish you luck and love for caring so much for your Aunt!!! You are a great person- hugs!