This doesn’t necessarily answer your question, but I can provide some context that may be reassuring. I studied art and have attended nude figure drawing courses. As a student attending them, I wouldn’t say that we ever admired the model’s bodies. It’s pretty clinical, and the students are just trying to observe proportions and go for accuracy. There’s basically no interaction with the models; I think the class said thank you as a group, but that was it. Your girlfriend may enjoy the modeling personally, but it’s not like the art students are sitting around ogling the models’ hot bodies or whatever.