You want folly? Here's folly...
You're in uniform as described and she sees something even tamer than described and is offended. She's probably got a case.
Next situation. You're in uniform watching full on gonzo porn and you hold the screen up to her and say "how about me and you get some of this on?" No case. Why? Because you are a UAL pilot DHing on Delta. You cannot create a hostile work environment if you don't work together.
Everyone feel better about the folly that is "being offended".