Unnecessary C-Section for healthy mom and baby

Dear Sir/Madam, My sister got admitted in a private hospital for delivery. As per all the scan reports and tests, she and her baby is healthy and normal. The doctor asked us to admit her to try for natural birth, but intentionally she breaks water without even trying for natural birth. She is doing this for all patients just to earn money. I feel she should enquired legally and conditioned with her unethical medical practice. Please help me with the laws associated with it