K.M.
I have to say I agree with LaKesha. If your daughter is still drinking milk from a bottle, she may just not be ready to let it go yet. My son weened himself from breastfeeding at 10 mo old, which was about 6 months before he decided that he didn't need milk from a bottle anymore. (He's 23 months now.) We all have wonderful pediatricians that give us benchmarks about when to introduce sippy cups and when to take away bottles, etc., but all kids are different and if your daughter isn't ready to give it up, what's it going to hurt to let her have it for a bit longer.
My son, now almost 2 years old still won't give up his pacifier. But some of the best advice I ever received, that has given me MUCH peace of mind is that he's not going to go off to college and still be sucking his pacifier. It's just a stage or a season for your daughter; she'll grow out of it.
Good luck!