S.L.
I am glad you're getting her checked out, the advice you got is all good ideas, etc. I just wanted to add that about that age I had terrible pain in my chest and heart beats fast and my mother took me to the doctor and they did EKG's and tests and nothing abnormal. I now know it was stress as I hated to go to school and so you should be sure your daughter is not hiding some stress that is causing it too. Maybe not but just a thought. Mine got better later in the year when I adjusted to the new school more. It could be much more though with your daughter.