As some of the others said, I used a loose form of Babywise for both of my sons (2.5 and 12 months) and they both were and are fantastic sleepers. They have hit a few rough patches typically when they were hitting new milestones (learning to roll over, crawl, stand up, etc). Those rough nights usually only lasted a couple of nights. But also when it was time to drop a daytime nap we had struggles, so be sure to evaluate if she isn't tired when it is bedtime, maybe she is ready to drop down to one nap if she is on two and you can get her to go down easier b/c she will be tired. Another thing that works sometimes is to let her have whatever (within reason) she wants in the bed- a toy, book, etc. And if she understands "deals" like: "I will read you a story AND sing you a song if you go night night with a smile, OK?"
Hope that helps~ night time fussing is no fun!! :)