My DS had two, one for his mouth and one he would rub on his face (cute now I remember it!).

He gave his to his beloved rubbish man just over age three. We obviously talked him into it over time (as well as saying I wasn't buying more when what he had got holes in it) but he ultimately decided to throw it away into the big bin after his other favourite thing, the lawn mower man had dumped his grass clippings in the bin.

I guess you'd have to put 'conditions' on it for what you think is right for her. It will definitely happen