Gotcha.  Sounds possible.  Lots of possibilities, and they're certainly keeping things from getting out into the public.  In another report on this, it said that neighbors witnessed multiple visits by police to the house.  Who the heck knows what was going on there.  Got divorced a few years ago, and ended up meeting some ladies who still had teenage sons living at home.  Some of these kids were frightening.

Some 15 year olds can't make good decisions.  Some, however, can.  How much a part of that maturity has a lot to do with environment as does with physical development.  And, on the flip side, I've met 45+ women and men who still struggle making smart decisions.  Humans....complex for sure.