Expelled

We are having to deal with one of the kids being expelled from school this week. Not what we wanted to hear. Cindy has always had a defiant side to her. Although she has come a long way she still has that streak in her at times. Although we have not had problems with her in school til this year. Her teacher she has this year is pretty tough herself and does not put up with anything. I thought it would be good for Cindy actually since last year she failed 4th grade due to lack of interest. Never wanted to study or do homework. It was like pulling teeth to get her to do her homework. Although this year she has improved in the homework area but her attitude that is very defiant at times her at home she has showed to the teacher this year. So she was expelled for coverings her ears, sticking out her tongue and ignoring the teacher.
Really hoping we can get her some help as I feel there are some deeper issues going on with her.