Regains

Magic

Borrowing: Granny's mind can hitch a ride on the body of an animal for a while

Illusion of Transfiguration: Granny can make people think she has transfigured them. It's a lot less bother than actually doing it.

Psychokinesis: Throwing things around with her mind. Don't make her mad.

Delaying Injury: Oh, there's no way to use magic to stop yourself from being injured at all. But she can put it off to a more convenient time.

Items

Hat: A witch needs a proper pointy witch hat.

Broom: She can fly on it... poorly. Also good for smacking people.

You: A small white kitten.

Beehive: Useful things, beehives.