My dd fell off her horse and hurt her arm. Everyone thought it was broken, even the trainer. I happily took her to Urgent Care, hoping to get an x-ray, etc. As the intake nurse took my info, as soon as she heard my dd hit her head in the process (wearing a helmet, horse gave a slight kick to her head as it got up...not a big deal with horses, I was only concerned about her arm) anyway, they refused to see us and said we HAD to go the emer. room for a CT scan. I tried to get them to assess the arm but no go, they were insistent re. the ER. Very annoying.
Waited until the next day when ped was open. Ped laughed about the supposed head injury. Gave us an x-ray slip and in the end, the arm wasn't even broken.
Honestly though, you can still have head injuries with a helmet on. I had a top of the line helmet on and had a bad fall, ended up with a skull fracture. I would have insisted your daughter go to the ER as well, with my riding students anytime you can't get back on the horse you're going to the hospital.