Sounds like a job for Nanny 911! ... or it *could* be the sitter. If this is your child, I would find a way to observe his/her behavior in

a setting where he/she's comfortable and observe his/her REAL behavior away from home.

Sitter may have been justified. Kids act so differently away from parents -- sometimes better sometimes worse!

She hasn't been kicked out yet and hasn't done anything horrible (yet)