Besides the jests about how this would -- complicate explaining to her where babies come from, there is the little matter of this being a D&D world where this could actually be Something of Significance. Though by the time they were explaining to her where babies came from, they had tested her thoroughly and concluded it was not so.
I would have been fine with leaving her origins a mystery forever -- there are two other characters in this setting that are likewise never going to know -- and had some jests ready for when the stars-in-their-eyes types speculated that she is a princess hidden for her safety.
But then the muse said, brightly, Aha! It was a distraction. Here's her origin. (It involves wolves, not lilacs.) And one corner of my mind notes that she might, actually, in a sense, have been born a princess if I go with that. . . .