Madeleine's Booboo

So, I went to pick Madeleine up from school and as she was walking to me I noticed there was something around her mouth. I said what is all over your mouth, thinking it was candy or something, and as I bend down to pick her up her teacher finally says "well..." Madeleine's lip looked terrible and I just looked at her teachers. Finally one of them says "well, you were there you tell her." I am getting more and more upset and the fact that they are stalling is just ticking me even more. Finally the one who saw it happen told me that the kids were playing a game where they run wall to wall and Maddie tripped over a Baby Doll and stopped herself with her face.