Funny concept! I felt so bad whenever I killed the grandmothers even after crossing the road with them. But it's honestly a funny perk and also a lesson that you have to be careful with such great power.
I think adding more urgency and suspense would help in this game. Maybe replacing sanity meter will something like city safety meter and having it reduce more on failed events.
Cute art style. Cute music chosen. If you can expand this with more events and polish I would like to try it again! Good job on the game.