She may very well have parents that let her get away with things just because she uses such aggresion and so she thinks that anyone telling her no she can treat the same. This is how she was taught by her parents to get her way! You can tell by the way her mom just blows off the mentors concerns by using excuses instead of giving the daughter a consequence for her actions. I see this all the time parents are to afraid of punishing the kids because the word punishment is so hard, I always use the word consequence to get the parents to see the light. And kids will understand this when you are consistent. These parents are using the mentors as a babysitter, I am a mother of an almost 8yr old, he has been around horses and riding them since he was 3 and I would never let him out of my sight while around any horse!!
Even if she has some kind of disorder like ADHD (or any other like some form of Autism) which alot of kids with this can fly off the handle at the blink of an eye, if she had consistent parenting... meaning rewards and consequences then neither the B/O or mentor would have to be keeping an eye on her ( her parents would be the ones responsible for that)
JMO, I have an older child with ADHD and slight autism so these behaviors are not new to me but have become alot less frequent with hands on parenting.
I am owned by the Sandman