Bullying at school

We are having problems with this one girl at my daughters school. it has been going on since the beginning of the year and seems to have escalated in the last few months. My daughter is in grade 3 and this girl is a constant torment to her and a

few other kids in their class. This week I found out that Rhana - the bully - tells other kids that they have to swap lunches with her. I know that sounds harmless but my friends daughter has a weight problem and she has been really proactive in trying to help her to lose the excess weight before it gets out of control. What has been happening tho is D gets a nice healthy well balanced lunch when she leave home but R takes it from her and gives her the crap and chips that she has. She doesnt give them the option to swap so its not at all civilised ie woul dyou like to share my biscuit?. No..if they refuse to sap she gets really angry and calls them losers and says they are ripping her off. Very intimidating. My daughter says she goes in cycles - picking on one kid for a week then moves on to the next. During their playtime she also causes problems and its a daily occurance that my daughter comes home and almost the first thing out of her mouth is..today Rhana did...and its never nice stuff. Se seems to take great pleasure in breaking up friends by saying dont be J's friend today or lets run away from d. Both me and my friend are at our wits end. Yesterday my friend B went and saw their teacher to try and get some help with dealing with this. does anyone have any ideas?

My daughter Brielle was having similar problems with a boy at her old school. It started with him picking on the smaller kids so B stood up for them and hurt the young boy Physically when it was explained to her that she couldn't fix things physically he started picking on her because she would not be physical anymore to defend herself or any one else, I looked into it a bit more and found out that most bullies do not have it very good at home they are bullyed themselves by a sibling or parent and that is why they bully at school so they have the upper hand for once. When I explained to B about this boys problems ( He was bullyed by an older brother)she sat down and discussed it with him ( which was so grown up of her ) and they now get along very well. I know that it might not work for every situation but I always think it should be tried. I have found that schools may say they have a no bullying policy but it is never enforced and children are left to work these things out by themselves.