Athyra is told mostly from Savn's point of view and partly from Rocza's, and is framed by a Prologue and Epilogue in an impersonal view focused on a small group that includes Vlad and the catatonic Savn. We hear most of the events in Orca from Kiera, who is telling them to Cawti, but there are also parts that she keeps from Cawti but shares with us. In Issola , back among some of his old friends and acquaintances, Vlad regains his narrative voice. Noish-pa speaking to young Vlad, although some of them couldn't be literally so. Neither Vlad nor Paarfi is a perfect witness.
Different characters see things different ways, and stories change as they are retold.
If I can save the consistency of the stories by reasonable recourse to this multitude of characters and Brusts, I would rather do so than blame the author for slipping. It's more fun. Besides, when dealing with an author this good, we owe him the courtesy of preferring to believe that if it's difficult to work something out, then he meant it to be so. I never wrote that. In other words, do something that would get that information across.