Favorite a model on the gallery page

I'd like to be able to favorite a model from one of her gallery pages. I'd also like to be able to see if I've already favorited a model from one of her galleries. The use case here is that I'm clicking on the models from the home page or someone's collection, one of her galleries opens, and I immediately want to favorite her without a) checking to see if I already did, or b) looking at her other galleries.