Denise is a dental assistant in your office who has been in the profession for 15 years. She constantly neglects to wear PPE when working with patients and doesn't always follow proper infection control protocols. Denise says that in her 15 years of dental assisting she never wore PPE and her infection control process is dependent on the type of patient she sees (adult or child). Denise also states that she has never gotten any diseases. How would you handle this situation?