Her final act of birthing dragons on Drogo's funeral pyre shadows the act of Azor Ahai forging Lightbringer by thrusting his sword through the heart of his beloved wife Nissa Nissa. When put into context of the theory that Daenerys is Azor Ahai reborn, and the dragons are her version of Lightbringer, it may be reasonable to assume that some form of divine guidance took place, and Dany was led through the process.
It is interesting to note that while many Targaryens throughout history have tried to hatch dragons and failed, Daenerys has no such overt ambition. She merely acts on instinct, and through anger at Mirri Maaz Duur. She has no knowledge of past attempts, of techniques used, or of magic, beyond what Mirri has told her of blood magic.