I have had the same problem at times and I just tell my children that in this world some people are not nice and they do the wrong thing it is sad and unfortunately we can't change these people we just have to try to stay away from them otherwise we will spend our lives upset because of all the people who don't like us. I prefer to think of the positive things and postive people.

 Lexi xxx

I can see how it seams unfair, unfortunity children are often seen as a reflection of the parents or there actions it's hard not for it to be that way. I persoally would join the party, or speak to the woman,  or tell my child the mum is monster and her children are next of kin to the devil. No but seriously now, I would encourage her to befriend other kids around town, if those kids are of the unhealthy and false opinion that you or your child are trouble makers then chances are the friendship wil be stained and stressful for your child anyway. Before she is rejected by them encourage her to reject them smartly first by choosing activities instead, staying above the stupid game that family plays The unfair truth in this world is there are 6 billion people on earth, an important lesson I think is that children learn its ok not to like everyone or be liked by everyone either, thats life, thats truth, that fine. I would understate the value of the situation to her, they don't mean anything to her valuable life. Better to move on like water of ducks back then trying to please everyone and keeping peace, they ain't worth a peanut in a nut shop. Take care and plan a big party at your place to even the scores ha ha.