Oh damn. That child could be Asirpa after all.
Inkarmat was the one who taught Wilk about Ainu culture in her childhood but he claims it was Asirpa's mother and no one ever talked about her mother other than Wilk either.
Inkarmat's prophecy also says a man is going to betray Asirpa... it's her father. (He's dead but it's still betrayal)
Granny adopting the orphan a while back and all that talk about Ainu people accepting and loving all children was foreshadowing.