This is a very fun idea! I like to imagine she escapes from Charly (after some fun) with most of her insides still intact, if not inside. From there you can do a lot with a girl who's been disemboweled but is still alive and trying to hide it. Like work/school, trying to act casual around friends.

"Why are you still wearing your shirt, Lisa? It's so warm!"

"Oh, I know, haha, I'm just a little shy today I guess..." as she subtly tucks in some hanging entrails, shifting uncomfortably on her seat...