Jesse only has it at sleep times now. Ive got him into a habit of when i pick him up out of his cot and say put your dummy in bed, he will pull it out of his mouth and drop it in his bed. I'll praise him and thats where they live now. That might be a starter, just to get her to only associate them with sleep to start with, then perhaps give them to santa come christmas. But the rule is.. once theyre given to Santa, they dont ever ever come back. So you cant go back on the idea otherwise it will make it harder.
Best of luck.