First off more than 2 days of cardio depending on how much she wants to lose. Second you can do an upper lower for her to get used to everything then move her to a body part per day like a normal routine. Clean eating lower her carbs up her protein. I understand she has food issues so some research on protein sources is a place to start. Water water water. Then just get her in the gym and see if she even likes it. That's my advice.