She agrees to private photos or videos between them. There is NO MORAL VIOLATION there.
______________________________________
Sorry but the Supreme court disagrees with you...
When I was taking Constitutional Law in college we studied the case of the man who visited a brothel and almost drowned when the water bed sprang a leak...he lost his suit ...partly on moral grounds...
Prostitution is an illegal activity.
The government won’t protect you when you have unclean hands. (when you’re engaging in illegal activity)
Agreeing to have pictures taken of you with the understanding they will be kept private, isn’t illegal activity.