Why?

A girl from my church killed herself last week. A beautiful girl. A girl everyone loved so much. A girl who knew the Lord. Why? I just can't understand how a person as beautiful in Him, as in love with Him, would do that. I can't wrap my head around it now. She's ashes in a jar now. Everyone misses her so much. It's just pain for no reason. Does the Lord have a will in this? Is it just some crushing blow from the Devil himself? The one who has come to steal, kill, and destroy? Oh Lord......please have a will. Thank you that nothing can separate us from your love.