She is hitting all the time now

Do not hit her back or else she might assume that this is a normal behaviour to do. Say in a clear loud voice "NO". Try not to leave her brother in a distance where she can harm him. Is he younger? Is she jealous of him? Try to give her attention as much as possible. © ronaldinu 2008

Wow, you have a tuff young girl on your hands. I would use supernanny´s naughty spot. Put her there for five minuts, tell her why she is put there and after the time and she have calmed down let her say she is sorry. I think that would do the trick. At least I hope so, god luck

My Parents mag had some tips: Give her the benefit of the doubt. Again, your toddler may not be trying to misbehave. Explain that it is wrong to hit someone and offer a time out or other appropriate punishment. If your toddler is hitting to make a point or out of frustration, help him explore other options to solve the problem. If he hits a playmate that takes a toy, show him how to use words to get the toy back rather than his fist. Give him alternatives to hitting. Be aware of the signs. Your toddler will often repeat certain patterns; if you see that your toddler is getting angry or frustrated, stop her and redirect him before he gets to the hitting stage. Explain why hitting is wrong. Do it simply and firmly. Look her in they eye and tell her that hitting hurts. We don’t hit. It is a common thing my daughter went through it too. It could just be a stage and pass.

tell her to stop and if that doesn't work put her in time out.