>>151080759 (OP)
What do you mean? Why do you think they're zombies? Clearly, they failed in their task to save Anne Frank and her unborn child and that unfinished business is keeping their restless sprits from moving on.
We'll just have Velma or Daphne put on one of those fake pregnancy belts and put her in peril, and when the zombies rescue her they'll be able to let go of their trauma and ascend to the afterlife. Easy-peasy.