So this idea just wouldn’t leave me alone. What if one of Volstagg’s daughters really looked up to Sigyn? Wanted to study Seiðr under her, serve as one of her handmaidens (at a time when all her ladies in waiting have left Sigyn because of the shame cast over her house from Loki’s betrayal, no less). Like, she absolutely adores Sigyn and comes to her as a child, staying with her even as she herself grows up into proper Asgardian lady of the court.
From what I’ve found, Volstag had 3 daughters? (I could be totally wrong, forgive me) Flosi, Gudrun, Gunnhild. I don’t know which one would suit her best