Ah the age old story for rebellious and resentful children the world over who are told it'll be different when you have your own, with a core of deniable but equally possible witchcraft running through it. 

As a short story it covers a lot of ground for the main character which is admirable enough but it would probably have worked better had the protagonist been more likeable rather than someone simply dismissing their own mother as crazy before then turning round and using similar manipulation to control their own child.