I think it would've been fitting, though slightly funny, if any of the wolfpack accidently called Lupo "Mommy" during a time like , for example, she scolded any of them for something stupid (moment or otherwise). Here's an example:
Luop: "Four Eyes, you NEVER use a teammate as a shield unless their zombies!"
Four Eyes: "Yes, Mommy; I'm sorry"
I can't say it's used in-game, but it's a random thought that popped in my head. It may not be professional in certain aspects, I'll grant you that; however, it does spark some humor for the players of the game.