The Associated Press (they never use italics) punctuates the possessive of titles in quotes like this:
"Jeopardy!'s" subtleties of language ... . (actual excerpt from The AP)
If a question mark were used, would we do the possessive of the title in quotes like this? Yes or no?
"Who's Afraid of Virginia Woolf?'s" followers ... .
I think the example above exactly follows the pattern of punctuation (with the question mark) as it does with the exclamation point. Yay or nay?