Trying to put a baby on a schedule can be really hard, mine kind of did it on his own. I can tell you that he is 5.5 months and still does not nap in his crib. When he was a newbie I would nurse him to sleep and he would either stay in my arms, the sling, or the couch in the boppy. Now he naps on my bed (blocked in of course) because we bf there and he drifts away. He used to be able to nap in his pack/play but he wakes himself us in that as he turns over now sometimes in his sleep. It was not until about a month ago, that he slept in his crib at all and now it is just for part of the night. After he wakes up to feed for the first time, he stays in our bed.
As pp mentioned noise can help. It is dry where we live, so I use a humidifier in his room at night and I think the sound it produces helps him sleep better.
Your baby may set her own schedule soon, in the meantime, go with what works, let her sleep where she will. And if all else fails...nap with her!