I think WLR means that 5 years in a lock up is a little extreme for shoving someone. However we do not know all the details. Looks to me like the town and schools were just a little tired of Shaquandra's and Craola's antics, and making an example of her.
I agree that we don't know all the facts but based on what we have gleamed from the news item it seems clear enough that the girl has a history of misbehavior and the mother isn't really interested in the best interests of her child, if she were I seriously doubt that she would continue working to make a bad situation worse by screaming racism when the situation seems to indicate otherwise. In our society today too many parents are just too quick to make excuses for their children's bad behavior and inadequate upbringing..
It has been my experience that juvenile courts are not prone to handing out harsh sentences to juvenile offenders until they have had many chances to straighten out and fly right no matter the color of their skin. The parents have more impact on a child's actions than anyone else. Children are a product of their upbringing. Too many parents today would rather try to be their children's best friend and not as much as acting as their responsible parent. This case seems to be an example of like mother, like daughter.