If momma was so upset at carrying out the option the judge offered her, why did she just tell him "No"? Whining after the fact about wishing she had taken the time beforehand to find out what her rights were is a good indicator of entitlement personality on the part of momma as well as the kid.
I'm more concerned about the kid going out to buy a pair of scissors and coming back to cut the younger girl's hair than I am about the threats of rape. (Rape?!? By a girl? Or was she going to get he boyfriend to rape someone?) It shows that there is more going on than "mere" impulse control issues.
Because I do not have a permission slip from the State and the guild I will not state that the child has tendencies that are consistent with psychopathology. I'll merely state that it sure looks like that might be the case.
stay safe.