This girl’s father failed her
“We got a call from one of the parents that was concerned about some things that were occurring in the relationship at this point,” Coromato said. “At this point that call along with what occurred is still under investigation so we have nothing further to release at this point on that.”
The perp is clearly badly disturbed. This must have become obvious to others. I suspect the young woman tried to break things off and the perp didn't take it well.