My suggestion is for the daughter. I would recommend that is it caught have gone through an abortion behind her parent's backs that are very conservative.

The monster's exposes the abortion through some pregnancy test she was hiding. As a death sentence the monster makes the parent's prolapse and rip out their daughter's genitals (ovaries, vulva) and eat them in front of her as she dies. She bleeds to death and dies in horror as she watches her parents/parent eat her reproductive organs. So in a way her punishment for aborting is to not have any ability to reproduce again before she dies. What do you think? Too gruesome or tasty?