If we were talking about an adult, I'd buy it.
The kid was 14.
I have a child only a few years older than 14 now. She would have been scared out of her wits if she was being accused of a homicide.
The AVERAGE 14 year old, sure. Don't lump all 14 year olds into the same category. The most dangerous people in almost any large community in America are 13-16 year old ghetto males. They grew up in bad/abusive homes, were raised on the streets, and have terrible impulse control. They do what they want, when they want, with no consequences. The juvenile justice system at most lets them out in 21 days, unless they kill someone. Yes that's right, they can rob someone, beat up someone, terrorize their neighborhood and the most the juvenile justice system can give them is 21 days in juvenile hall. They get out and go back to their ways again and again, until they turn 18 and are FINALLY sent off to big boy prison where they belong.
For one year I supervised 12-17 year old males in a prison environment, so I am intimately familiar with them. I would never do that again. Not for 100K dollars, not for a million dollars. The kids are just flat out DANGEROUS.