Not a fan of cute Devin being transformed into an animal either, though imho that ending was quite funny, so i was happy to be able to continue along the other path.
Only 2 options? How about Devin wakes up after he is done with her, maybe she even had a dream, but doesnt remember anything. Another 'regular' schoolday ahead of her.
Or thanks to the injected chemicals he manages to actually please her and just maybe she even takes over. Or well... probably dev has something beyond my imagination upon his sleeve