Hello C.,
if you are not wanting to do the soy/rice 'thing'.... well, just wean her off the bottle slowly. now, let's think this through...the main reason for drinking "milk" is for the calcium consumption (+ vitamin D and protein). if you already figured out how to make sure she gets enough calcium + vitamin D ... and she's eating lots of fruits and veggies, don't worry that she won't drink juice from her zippy cup... for the vitamin D you can get the drops they have (one drop = daily recommended allowance)
calcium...there are lots of calcium rich foods. you can also get calcium in liquid form (just like milk of magnesia) and mix it into foods, I don't recommend the strawberry flavor... just get it plain flavor.
also, will your daughter drink from a straw cup? does she like to drink what you are drinking? Good luck! I know it's probably more emotional for you than for her. I so relate to the comment you made about how would I feel if someone took away my morning cup of coffee! ~C.~