About a year or so ago, I posted an article about a teenaged girl who poured a pot of boiling water on her mom's face while she was sleeping. As it turned out, the girl was acting on the "advice" of her thug boyfriend. Something like that may be going on here. The daughter probably is secretly dating a gang-banger (and may be banging, herself). That's probably how she got the stolen gun in the first place.
Don't get me wrong, I'm not cutting this little brat any slack. Just sayin' that, honor student or not, I'd bet this girl has had dirt under her fingernails for quite a while now, and also that she probably didn't think this up entirely on her own.
The accused, btw:
She looks very very young, semi sweet and innocent.
But what dark thoughts are inside her head? A bunch is my guess.