As part of Godly Defense Budget negotiations, she was betrothed somewhat against her will to a weapons manufacturing dwarf called Alvis.
But THOR was not happy and tricked the dwarf into staying up all night. As the morning dawned, Alvis got caught by the sunrise. This is not good for dwarves as they turn to stone. Wedding off.
After this unfortunate enforced jilt, THRUD seems to have taken a vow of chastity and become one of the VALKYRIES.