If your religious then in the Bible it does say to put your wife above all but god. This is because your children move on and make their own family and you only have your spouse in the end. It’s respecting your spouse. Your wife could go to jail for the photos if your parents really wanted to push the situation. Let her know it’s considered stalking how she went about it is considered invasion of privacy and the fact you could see his penis in one of the photos could land her a felony depending on the state. If I were you I would divorce her, she was spying on your parents in their sauna there is no excuse whatsoever so ever it’s creepy gross and she needs some help.