My "canon" Gorion's Ward romanced Xan, and I fully intend to create their daughter as one of my Tavs. The game is in no way going to acknowledge these things - obviously - but I have grown very good at self-delusion and rewriting scenes in my head as they play out!
Xan is one of my faves too, though insofar as I have a canon Gorion's Ward (which I don't really, it was just a reasonably recent playthrough that grabbed my imagination somehow), she had a rather unhealthy relationship with Dorn for whom she replaced his rejected patron, especially when she ascended to the Throne of Murder. I'm guessing that the "ascend" endings might end up not represented in BG3 given it looks like Bhaal is definitely back, though we'll see. I'll cope if it turns out BG3 is set in an alternative universe to her story.
But like you, I'm willing to ignore and twist bits of what I see in the game to preserve my head-canon if that's what I need to do, though I do have my limits when it's more than the odd throwaway line!
