I definitely agree with a lot of the above. She could have a much more varied Vegan diet counting calories. It might actually be easier too, as with 2 small babies you could have more convenience food or quick options. Wicked Kitchen do some really nice Vegan ready meals.
2 small children under 1, can making cooking from scratch 2 - 3 times a day difficult. I have struggled with food after the birth of both of my babies. Probably for the first year or two. You’ll always find someone who didnt find it difficult and could eat so healthy and lost all the baby weight, it wasn’t me. The lack of sleep also just made me crave sugar so badly.