Double Subverted: ....but that's because she's playing a Joke Character, just to prove that she can roleplay any character type.
Parodied: Susan plays her character, Mary Wizard like a parody Mary Sue in a So Bad, It's Good fan-fiction.
Zig Zagged: Susan rolls a die before game. If she rolls a 1, Mary Wizard is Too Dumb to Live and is played so badly, you'd think she's never cast a spell in her entire life. If she rolls a 6, Mary Wizard is Genre Savvy. If the dice is anywhere in between, Mary Wizard is just blind to the Genre. Susan states "Multiple Personality Disorder" if asked about Mary Wizard's weird actions.
Averted: Susan plays her character, Mary Wizard, as a normal wizard with the correct Genre Blindness for the "D&D" game.
Enforced: The Game Master is quite obsessed with the setting and will be the Killer GM toward any character he considers to be a Flat Character.
Lampshaded: "Are you going to stop your Ms. Minus act any time soon, Mary?" "I'd rather eat toxic waste then do that."
Invoked: The Game Master asks the Players for five to ten pages of backstories for the characters.
Exploited: The GM is actually a hack storywriter who is somewhat talented at worldbuilding but cannot write characters to save his life. He arranged for an entire group of roleplayers to play his campaign so that he can steal their ideas to write a book.
Susan Tory wants you to go "The Roleplayer" or she will force you to list to everything her D&D character, Mary Wizard, did from the first game up to the most recently finished arc— and she's been playing D&D since The Seventies.