K.C.
Hi M.,
First Happy Birthday to your dd! I believe it would be wrong not to invite the little girl to your party. I think we want to teach our kids to be forgiving beings and we need to start with ourselves. I can easily see why you'd feel she slighted your daughter but in all fairness maybe you don't know exactly why. Maybe she was limited on guests or a budget for throwing a party. I think she definitely should have invited your daughter but the girls shouldn't pay the price for their Mom's oversight. I think party invites can get so tricky so I feel your pain. Bottom line if your daughter wants her there and they get along then she should be invited. Good luck!