As the minor child's legal guardian under the laws of your state, you are responsible for paying the upkeep for your child including medical and dental bills. If you have health insurance for your 16 year old daughter, I would submit the bill to your health care provider with the hope that it will pay for a vast majority of the tests that your daughter received at the hospital that you have written about.From what you have written, there is nothing that I see that the hospital did improperly with respect to the medical care that your daughter received from it.