My daughter hit her head several weeks ago while staying with a friend. I didn't find out til almost a week later. Seemed like there was just a crusty build up left over the bump but today as I was trying to loosen up the build up it seems very much still open and raw underneath, and not down on the scalp but the raw place looks very raised. I am terrified. I want to take her to the ER but she has a dance thing tonight and is crying about missing it. I don't know what to do!