E.S.
I know that the dentist is right about how it can affect her teeth. She may be a little young to take it away...but a great suggestion to make her not want it anymore is to snip of the end of it with some scissors. When she puts it into her mouth to suck on it, it will collapse and won't be near as comfortable to her to use. My niece would put it in her mouth and take it out and say "this one broken". We would tell her to throw it away and she would say no and just caryy it around. Might be worth a try...?