I want to help my mom who is bulimic

Patient: My mom is 50 years old and about 2 years ago she decided to get the lap band procedure done. She quickly realized that She could still just eat whatever she wanted and however much she wanted and she could just puke it up and lose alot of weight. I as well as all of her love ones believe that she is bulimic. We have had countless family talks and”interventions” but nothing has changed her mind. I’m really worried about her health because she does not look healthy, do you know of anything I could do to help her?