She has picked out all of her sippy cups, but she will not take them when she wants to go to bed. That is the only time she wants the bottle. We are on the last bottle (as she has bitten all the nipples off the others), and I don't know if I am prepared for the struggle to get rid of it.

Why do you think its important to get rid of the bottle now. My advise is to let her keep using it for another two or three months, then try again.

I think it is important because I wanted her off of it months ago, but with everything that has happened I let her keep using it. I hate the fact that she is so dependent on it.