J.C.
Start putting her to bed in her crib at the same time each night. If she fusses wait 5 minutes before you go in to comfort, and if she is still fussing in 5 minutes, go in and comfort without taking her out of the crib if you can. Just talk to her, or sing, and rub her tummy or back until she is calm, and than leave. If she cries again, wait another 5 minutes before you go in. I did this with my boys and I never had to go in more than once, they always self soothed before the second 5 minutes was up, but I started younger, so it may take a few nights for her to fully get it. Teaching her to sleep on her own will benefit her greatly in the years to come, and this method works well at night as well. When my sons would wake at night I would wait 5 minutes before going in, and they always were back to sleep before the 5 was up.