What's the worst thing one could to to drive a single mom crazy? I'll start with two
>abduct her 4yo daughter and after one month leave her corpse to her door with a tape with "I enjoyed your daughter, thanks!" written on her missing poster (there was some meme depicting this somewhere, I can't find it right now)
>kidnap both the mother and the daughter, put them in two rooms separated by a transparent unbreakable glass. Keep giving the mother plenty food and water. Never feed the daughter.
What would you do?