Harry seems to have embraced being Maggie's father, but IMO he seemed a bit hesitant in his interactions with Bonea. Harry knows Bonea has access to a vast amount of knowledge, but she lacks the context to safely use much of it. In other words, Bonea is capital D dangerous. (And maybe more interesting to watch as the series goes forward. We might see Maggie display the beginnings of her magic ability and then get shuffled off to school, but Bonea might reveal things which will produce dramatic effects in the near term.)
Now there are lots of books on child rearing; some from respected authors, some from crackpots, and many in between the two extremes. Plus, there are always people who will make their opinions on how to raise a child, known. Unfortunately for Harry, there is literally no one person or source of information he can read which might help him with Bonea. I doubt Lea or Mab would have any useful advice either.
Well, there is one possible source of information Harry could turn to, though he'd be loathe to let this individual interact with Bonea. Of course it's Bob. (Plus, there is a WoJ on Bob's parents. We've already met them, I think. Can anyone find the exact quote?) So, my guess is that Harry will start pumping Bob for information about his early development. Sooner or later Bob will figure out why. I don't know what will happen after that but it could become interesting. Well, there is one thing I'm fairly certain of. At some point Bob will tell Harry that he's doing a terrible job as Bonea's parent. Also, my guess is that a spirit of intellect has the potential to mature much faster than a human, but that's just a guess.
I suppose I'm asking what do you think will or should happen with Bonea? I think this character has lots of potential but Jim hasn't given us a clue where he's going with her.