Well... Definitely not the most intelligent decision to make....
That said, it's incredibly sad and I can't imagine the pain her friends and family are going through. RIP :cry:
EDIT: And to the people saying she deserved to die for doing something stupid, get your head checked. It was obviously a stupid choice, but this girl was still a person with family and friends that cared about her. We also know nothing about her as a person (beyond liking to take selfies and probably lacking common sense, neither of which are things people deserve to die over) Not to mention that human life has value, that's why we have laws against things like murder. How would you feel if this was a sister or relative of yours, she died the same way, and all you saw was "She deserved it for being dumb enough to take a selfie there!"
Aw she was beautiful. Apparently not very bright though. May she RIP, and hopefully her friends will learn not to do this or let anymore of their friends do something like this.