M.H.
I know alot of people will say I'm wrong....but, I let my daughter let go of her bottles on her own. She got to the point (around 15 months) when she would just have one before bed. By 17 months or so, she was done altogether. I caught alot of flack from people when she was still having a bottle at this age. My thought on it is, you feed your kid how you want, and I'll feed mine how I want. I also have the philosiphy that I dont fight my DD over what food to eat. Seems to work because she eats a HUGE variety of foods.
I think that perhaps just dont offer it to her and have her tell you when she wants one. I'll bet that if you go a few nights without one, she'll "forget" about it.
Good Luck in whatever you decide,
Margaret :)