Unfortunately - brought on by self inflicted behavior. sad because she is so young. I wish her well in her recovery. It is not the use that gets you its the abuse and over-indulgence. Abstinence is much easier than trying to exercise self-control.

Ah yes, most young person believes that they are immortal, until the very moment they discover reality.
Growing up can be very painful .... which is why some never do.

I wish her all the best.