J.K.
What I would do (I have one almost 11 months old) is go in there and lay her down and say goodnight it's time for sleep then walk out. Let her cry for a few minutes then go back in there and lay her down, but don't say anything this time, and walk out. Let her cry for a little longer each time etc. I learned this from super nanny and tried it and it worked for me... good luck!