E.S.
We had problems switching to sippy cups also. My in-laws were over the one day and my niece and nephew wanted smoothies so we ran out and got some and I sucked some of mine up in the straw and squeezed it and let my twin sons get that taste in their mouth. Once they had it, they wanted more, so they learend how to drink through the straw. That might be an option to at least get her off of the bottle, which isn't supposed to be good for hteir teeth when they are over 1 year old. We also used the playtex soft tip sippy cups and they worked great. I got my boys in the bad habit of giving them a sippy while changing their diaper because they started getting really fussy, so we do that when they wake up in the morning and from their nap and then at their other meal, they drink out of a straw. It really comes in handy if you are out traveling or at a restaurant and it helps because you don't have ot lug sippy cups everywhere. Good luck!