What Should Vegans Be Eating Every Day My Friend Cannot Lose Weight...?

My friend cannot lose weight...? - what should vegans be eating every day

My friend is 5'2 and very bold. She is 19 years old, but when I was younger (I think 12 or 13), who was anorexic.

Now it is as if they do not lose weight. I live with her, so I know what you eat and exercise every day.
She is a vegetarian and eat much less than I (and I'm not overweight). She works hard together on the treadmills, bikes and weight machines, and also a dance class.

I do not understand how you can not lose weight, but I'm sure he has with the fact she used to do to starve. Is there anything I can do to help you lose weight if they do not all you need to do?