Are you going to stay a plot device?
For plot significant reasons, the hero's daughter can't stay in his household while he's a widower; only if he remarries. So she's in the household of his parents. And I was introducing the heroine and realizing that the same rule applies to her, that he couldn't get her directly to his grandparents' owing to plot-significant separations, and that -- ummm -- I could put his godmother nearby and let him bring her to her. That would be proper.
She's a plot device to enable another plot device.
Which doesn't mean that she's going to stay a minor plot device.
(No, she's not his fairy godmother. I just didn't want to complicate the royal family any further.)