As one of the ex vegans (ex raw vegan!) I agree with her. Even though I eat LC to VLC, I rely heavily on greens and coconut - both heavily emphasized in raw vegan diets. After a while I added mollusks (no sentience), then fish. Then I just added meat to the mix and took out a lot of fruit.
For me, environment and health were the biggest issues, along with total hatred of factory farming both on environmental and animal life quality issues. Not to mention the human costs in huge factory slaughterhouses. Once I figured out that all of those could be better achieved with a paleo diet focused on sustainable food, bye bye to the banana people.
It depends on the persons reasons for being veg*n, but a lot of veg*ns are quite possibly tomorrows paleos. Be nice, we come around.
I forgot to mention that one thing that really opened my eyes was learning about permaculture, which is an extremely sustainable method of food production (on the verge of creating hunter-gatherer conditions) that really requires both animal and plant components. Also, because I was already a horticulturist working with other agriculturists, and attending sustainable ag conferences, I was exposed to what good food production looks like. It doesn't look like factory farming. Seeing one of those (factory farms) without the knowledge of real food would make almost anyone give up meat.