Their relationship was only screwed because Sigurd was tricked into marrying another woman after being drugged by a potion, sans that dishonest marriage there is no boundary between them.
Grimhild (Sigurd's mother-in-law) was a bitch. She ruined Sigurd's life, she ruined her daughter's life, she ruined Brynhildr's life, She ruined her son's life, and set her entire kingdom up for complete annihilation so that she could say Sigurd was of her family.
Grimhild (Sigurd's mother-in-law) was a bitch. She ruined Sigurd's life, she ruined her daughter's life, she ruined Brynhildr's life, She ruined her son's life, and set her entire kingdom up for complete annihilation just so that she could say Sigurd was of her family.