Originally Posted by
gneiss 
Thanks, Cali. She pulled the suicide threat with me and I called a friend to ask his opinion. He said, "It's emotional blackmail. Don't let her do that to you. There's a reason people like her don't have any friends, and you're starting to see it now." *Ding ding ding* We have a winner! He advised me to call her parents, inform them of the suicide threat, and not speak to her again. I should have taken his advice... *grumble grumble grumble*
Call the police and report her the next time she says she is going to kill herself. When they show up and start asking her a bunch of questions, she'll know that you are taking her threats seriously and one of two things will happen:
A.) She'll never threaten suicide around you again
B.) She'll leave you alone
She might be looking for attention, but anyone threatening suicide, in my opinion, is not a stable person. Anything could happen. Remove all doubt and let the authorities handle it.