Thank you Fresia for your caring response. Yes I definitely think the girls would have resolved this or at least agree to disagree and leave each other alone. Now that the mother got involved, she made things worse and then her daughter tried to insult me via my daughters friend, which made the rift even deeper. If things were left alone my daughter would be looking for a solution but now she's not interested and feels mad.
Regarding the boy - the other day they were outside and he tried to pour water on her shirt so he could see her breasts more - she heard this after the fact - anyway she has a brown belt in karate and she grabbed his arm and pushed him to the ground. A substitute teacher also heard him talking inappropriately on Friday and told him, this isn't the way you speak when there are young women around. So we'll see how it goes today......the bus just left....sigh. Thanks again Fresia.