Then you either need to come up with a good compromise or you need to let it go. There's nothing wrong with her wanting to be equal in the relationship. But you need to stop putting the blame on how much you make and how she's only doing it because of it. Who cares? I bet she's not trying to spite you or anything. You don't know if she would be doing this if you weren't making a lot of money. Maybe she generally enjoys modeling. Stop making assumptions.If you're that worried, start going with her to private sessions. It's perfectly responsible to do that for her safety especially given this situation.

You're blowing things out of proportion. Give yourself a bit of a reality check and approach this situation as a mature adult and not someone who's throwing a tantrum because of how much money they make.