Hi!!! I understand the feeling! I have 3 little ones (6,3, and 6 months) and 2 oldest already grown. Sometimes we have to be really patient and try to create a simple pleasant routine before going to bed: a short story / poem / a song / a prayer; a lullaby video/dvd like "baby Einstain". But just in case ask yourself if anything has change in your baby's life: new home, parents situations, a job, new people around baby, new sitter?
Two of my youngest when turning 2, didn't want to sleep in their crib anymore. The only way for them to go to sleep was laying them down on the sofa, TV on children's programs or music bedtime video. I would sit next to them or try to rock them at times. Before turning 3 they were both sleeping on their own bed. I had to work around cut down TV, tried to re-do their rooms.
Every child has this unique personality, and you know your little one better than anyone so think about her likes and work around them. May God give you strength and guide you!