I do not know the laws for you, but my inclination would be to send the email to the testing center letting them know what your daughter experienced. The CDE can take it from there. These tests matter to the student, school, district, and state. They need to know that there is the possibility that there was a problem with the administration of the test. You can certainly mention that you expect that the Principal will also be contacting them with his/her concerns. You can blind copy the Principal if you want to make sure that the lines of communication are clear as well.
Good luck
