On this occasion, Sid agreed to be nothing more than a passenger. If Josephine stood any chance of passing herself off as your average pregnant woman, the last thing she wanted was to blunder through patrons Frankenstein’s monster-esque. She drew puzzled and disapproving looks regardless, as she waddled her fit-to-pop payload to the bar, and ordered an orange juice.
All I need to know is what's the usual format for something like this? Because it's related to 'Frankenstein's' should there be an endash between that and 'monster'?
Or is it down to personal taste? Also, is there a term for something like this?