Hi, I had a determined little "booby" girl!! It is hard, but when she was nearly 2, I got a bottle of milk ready at bedtime and told her that Mummy's boobies had run out of milk as they were for feeding babies and she wasn't a baby anymore, she was getting to be a big girl, so if she wanted milk, she would have to have it from the bottle now. She patted my "boobies" and said, "all gone now!" Grabbed the milk and cuddled up for her story. When she woke up during the night, I gave her a bottle of water and after a bit of a complaint, she grabbed it and went back to sleep. Hope this helps, good luck!!!

Sounds like a "let her cry" situation.  I know from experience this is difficult on you let alone her, but habits are hard to break and sometimes going cold turkey is the quickest least painful method in the long run.  Do what we did when we had one that wouldn't sleep through, prepare yourself for an unsettled night by getting some books/magazines to read, a flask filled with a nice hot drink and settle down.  What happened to us was that usually, that night the little beggar would sleep through!  Good luck.