This, easy. Anyway, there's ways to feed on vegetables or even animals more respecful and responsible than others. Traditional Inuit, for example, may live in wastelands where you hardly can find vegetables, so they must necessarily eat animals. Still, they could hunt, kill and consume in a well-balanced sustainable and not frivolous way.
You are right on this. A true vegan would not use animals for her own purposes.
Maybe Nature Girl is consistent in her principles everyday of the year...?
Also, I suggest to read a little bit of Swamp Thing. It's cool