I was a bit
to hear that my friend's dd deliberately cut my dd's with scissors at nursery school today
Both are 4 yo girls. I wouldn't mind but the dress is now unwearable - big cut rent in it. My dd said, "She did it because she doesn't like me anymore and she doesn't want me to be friends with her friends." 
I'm annoyed on two counts.
i. that little girls were in possession of scissors that are potent enough to cut fabric unobserved by teachers.
ii. that I was only told about the incident when I saw the rent in the car park and went back into class to ask what had happened.
What should I do? I'd like a new dress but should I just accept it as part of the rough and tumble of school life?
And how to equip my dd with coping skills if there is bullying and meanness?