Hi i don't know if this question has already been answered but my dd is the queen of short naps. She can go longer if she is in the car or a vibrating chair, however in her crib she wakes after 30 minutes, happy mind you but wakes none the less. I realize that the car and chair are probably props and a big no no but not something we do all the time just depends on if we are travelling or out at someone's home. What i want to know is, how come she can sleep all night long and go through the sleep cylces no problem but through her naps she can't?