Got the rest of the story after my daughter got home.
Disclaimer, I'm not good at handling these situations to begin with, so my wife and I had a chat before we approached her about what happened.
So, she pretty much said exactly what the principal said, except we got the rest of the story. She said her and 2 friends were playing at the fire pole on the play ground. A fourth kid (the boy) decided he needed to come up. Apparently there is barely enough room for three kids at the top of this thing, so when the boy came up he proceeded to shove my daughter into a corner. She said she told him to get off,but he didn't so she kicked him. Wasn't aiming, but connected with his balls. He screamed, which caught the proctors attention. She came over and made them all get down, listened to the boys story, and marched my daughter to the principals office.
One of the girls that was up there has been an issue since they started school, multiple times my daughter has come home in tears from things this girl has said and done, and she's done some questionable things, including pulling my daughters pants off several times, ripping her shirt... the list goes on, and doesn't get much better. She was actually transfered to a different class because of the issues. So the only time they see each other is during recess. We've told my daughter to stay away from this girl multiple times, but for whatever reason she doesn't seem to listen. My daughter doesn't have many friends (2 to be exact) at school, so she thinks this girl talking to her makes them friends. My daughter had gotten in trouble multiple times from sticking up for this girl, she's not my daughters friend. She is several choice words that a 7 year old kid shouldn't be called....
Anyway, so I wasn't surprised after I found out how things went down after my daughter listed off the 4 kids involved.
The boy and one girl are just trouble. I did find out an interesting tid bit, the other 3 kids got to finish recess before they were called to the office, and they spoke with the principal at separate times from my daughter. So at no point could my daughter have spoken with the girl that stuck up for her, but the other two had plenty of time to make up a load of bs. Really it should have been over at that point. Sure, she needs punished for kicking the boy, but both the boy and the trouble girl should be in deep do do, for making stuff up.
Needless to say, we have a meeting with the principal tomorrow morning. My wife is furious about all this, so I'm sure tomorrow will be interesting.