The best for training is to offer enough scratching posts and if she is scratching else where, just move her to the scratch post. saying no to a cat really doesn't do much.
What kind of litter box do you have? she may need a covered or one that has the stairs that go up and around into the box, if she is a super digger she probably will always be a super digger.
What kind of litter box do you have? she may need a covered or one that has the stairs that go up and around into the box, if she is a super digger she probably will always be a super digger.