So, it might be worth discussing with her some “halfway” alternatives. I have flirted with vegetarianism my entire life (even as a child) due to ethical and environmental concerns. I’m currently full-carnivore due to BG and weight control issues.
The issue of carb-density and protein sources can be really quite challenging for many vegetarians and vegans, and can make BG and weight control difficult. I can’t imagine, for example, keeping my carbs as low as they are (I eat around 50-100g a day) while simultaneously keeping my protein intake (160-190g per day) and caloric needs (>3,000 calories per day) as high as necessary on a vegan or strict vegetarian diet. I a sure it’s possible, but I haven’t been able to figure a way to do it reasonably and affordably. Meat, cheese, and eggs are staples of my daily eating regimen to keep calories and protein high and carbs low.
That being said, things like “flexitarian” and “pescetarian” are becoming quite popular these days. I think that a vegetarian diet with eggs, cheese, and milk or vegetarian plus fish might be doable for many people.