If Selora is not Rook, but she is still a crow, where is she post-veilguard??
Great question! My answer is kind of complicated lol. I've gone back and forth a few times about it (one of the reasons I've never finished the Rook as a Companion meme) and it really depends on what she's doing for that period of time.
If she's spending it as an additional companion (and her questline is seen through) it's probable she ends up leaving the Crows. I say this because, canonically, her going back to them is highly dependent on her relationship to Lucanis and their relationship is really only something that happens because she's Rook. However, if she's not Rook but has the same development arc, she's not going to want to go back to House de Riva, specifically. I think her path would be similar to the one she takes in canon after Lucanis' death, which is to say I think she finally returns to Ventus to try and track down what happened to her mother after she was taken. That's what I see her doing immediately in this scenario.
In the instance that she's just a random Crow ally in Treviso, and still working as a Crow during the occupation, she dies in the battle of Minrathous fighting alongside Viago after he tried to convince her to stay behind which he could have ordered her to do and didn't and all of their issues remain forever unresolved. I'd like to think it becomes a deep regret that haunts him the rest of his days 😌