She’s a vegan. She exists on rabbit food, is spotty, pale, thin and unhealthy and has no interest in good food. She is obsessive and only cares about animals. She has no interest in the welfare of people and in fact actively dislikes most of them (except other vegans of course) and the sooner the world is rid of them the better off all the animals will be.
She can’t eat cake or chocolate, and all her clothes are made of hemp, so she must be really boring and leads a very sad life.