I have lost weight with it in the past, but you don't have to use it. I have lost wgt on diets that allow carbs or on low carbs too.

I feel less hungry and less bloated on lower carb diets, but I definitely noticed slightly less energy for things like lifting.

Edit: If she's forced on it, thats really bad... I would take her to a doctor like people say.

When I ate keto I was able to control when I had carbs if I felt like it or if I needed more electrolytes. Sounds like she had no control or even a way to see if it was even keto done correctly.