I have personally struggled with suicidal thoughts myself, and frankly to call it selfish is a form of victim blaming. If anything it's a sign that a person has been fighting far too long and are exhausted. It's a call for help perhaps. That is crucial since I feel a lot of people who struggle with this sort of thing feel like nobody cares about them enough to help. With that said, it's tragic that this girl actually went through with it, but now that's she's gone there's not really much that can be done unfortunately.