I'm not sure what help you want...so take what you're looking for...

You can have her blocked from your email list.
You can email her saying if she does this again, you WILL notify her local authorities so they can take her to the hospital. (or something to that effect)
You can enlist the assistance of the Admin here... depending upon whether you knew the member first here or otherwise... options are available.

Send her links to sights that give online help... and even from the front page here on "if you're suicidal...."

Ask for her home number and parent's name so you can call them when she does this again...and tell her so
ASK her not to email you with that kind of information... as it burdens you too much, and if she really cares about your friendship, she will help take care of you, too...

I agree, that puts an unfair burden on you... take care of yourself ((((hugs)))