Did you ever try reading children's books? For me, I had to start doing that as my adult self, but it seemed to nourish the littles. I sometimes watch movies too. And I just got a colouring book - full of patterns, not pictures - and that helps too.
The other thing is to try to work out what the triggers are when she does come out. That way you can work on those triggers. But I've not got very far with that myself yet.