I was sad for my girl and feel bad that she does have a tummy. (as we all do in this family)
"It's not nice to say mean things to people and make them feel bad".
This was a tough one but I do believe in not holding grudges and turning the other cheek so I told her to be polite and nice to the girl unless she says something mean again. then if she is mean again to tell the little girl that she doesn't talk to mean people.