I wuz a short term (one day at a time) sub a few times b4 I got a job using my major (STEM). I also had a few subs as a student. All were a wild thyme.
While role-playing is certainly a great way to engage students, I cannot imagine being sympathetic to a substitute — or to anyone dealing with children — who chose such a subject for role-playing. I am guessing this perv was starting out at grooming these youngsters for more advanced perversion. May she burn in hell.