L.K.
Does she cry to be picked up when she wakes up? Is there any chance she will stay in her crib quietly once she is awake? If so, perhaps she will play / talk to herself awhile and then go back to sleep. My son does this sometimes. Does she go the 9-10 hours at night without waking up? If so, that's great! I still struggle with my 11 month old with that. I think you should try just the afternoon nap and see how it goes. My son is starting to go to just one nap, although I'd like to hang on to two a little longer. Really, it sounds like you're doing all the right things. Trust your instincts.