How to tell a parent their child is horrible?

If my child was there with that child, I would take her out. What did the mother say when you informed her about her child? I

I would just tell the parents that due to the fact that their child is disruptive AND a danger to other children (because of her hurting others and throwing), that you can no longer keep her on as someone you watch. Yes it is less money, but it opens a spot up to someone else. You and no one else should have to put up with that, it isn't fair to the other children. You are spending more time with this kid trying to calm her down and they have the risk of getting hurt. Just be honest and do everyone you watch and yourself a favor....tell the parent you just cannot have her there anymore. You don't have to be rude about it. Just explain that you have to think of the safety of the other children and that you cannot devote all your time to one child while the others are not getting the same attention. GOOD LUCK!