25 yr old stepdaughter as a teenager threatened to kill her sister when she fell asleep, killed a kitten with her bare hands, and tried to slit her wrists, always been aggressive. Is verbally abusive, still throws tantrums. Leaves nasty messages and sends nasty letters when family or friends don't do what she expects them to or react the way she wants. She has a 3 year old and I'm tempted to hot line her. She lives with her mother and there is always pot in the house. Is she bipolar, just unstable or is it the drugs and booze that she's used since 15 yrs old that's just taking it's tole?

She went on a rampage (unjustified) a few months ago against her father by writing him a letter that was borderline sicko. Lots of blame on him for no reason except that he told her he was hurt because she drove into our area and didn't stop to see him with his grandson.

She screamed into the phone so loud I could hear her across the room. Then she sent the letter. Now she resorted to nasty phone calls that we did not initiate. We refused to go to a function knowing she would be there. We didn't want to ruin it for everyone else, not knowing how she would act toward him. She left us a message ending in "%#@&#!". Then when I called and told her not to ever call us again and never include me in her issues with her father she called again anyway to scream into the phone, "fat %#@&#! %#@&#!". Keep in mind her mother threw my husband out during one of her menopausal fits. We had not been going out and he was not cheating. I weigh 130 lbs and have only slept with my first and current husband, She however has been a bit of a tramp and has a child out of wedlock.

Any ideas? Just ignore her? Hotline her?