My wife hit her head...hard?!?

On Wednesday evening my wife and I were taking a walk with our two little boys, she was holding our sleeping 13 month old and I was carrying our sleeping 3 year old, we were headed around the corner of a school building and these two guys came flying around the corner fighting and knocked her over, she held up the baby but smacked her head hard on the concrete. She tried to stand up, but she couldn