J.N.
You need to pick - are you going to let her cry it out (all the way) or are you going to go in a rock her. When you let her cry for a longer amount each time then go in, you're teaching her to cry longer. My suggestion is to just skip the crying part and have the bedtime ritual.
I really don't understand why we feel like we need to hav babies go to sleep 'on their own.' I see no problem with rocking and cuddling when they are young enough to do that, and let them go to sleep on their own when they are old enough to do that. (My 'baby' is now 5, and all 3 kids climb in bed and go to sleep by themselves. Sometimes I miss the rocking stuff).
You may need to re-evaluate the situation in about 9 months (when she's about 1 1/2). She'll try to exert independence then and may not want to go to sleep, and you'll have to deal with that issue. But I don't think it's at all connected to whether you rock her now or make her fall asleep alone. It's just another phase.