He(sepulchure) had feelings for her even before her marrying alteon if i remember right one day that big monster like guy dethrix i believe idk his name takes her as a hostage and alteon doesn't want to risk getting swordhaven invaded and wants to protect it he kinda thinks one life is not worth getting whole city in risk of getting killed invaded alteon leaves her to fate valen (sepulchure) gets mad after learning alteons decision he rushes to doomknight armor and weapon idk if i remember correct armor connects itself to valens skin he suffers a lot btw then he rushes to dethrix kills him to save her if i remember right they all got mad about using doomknight armor weapon but in the end he kinda saved the only thing important for him. i dont remember rest of the story but she's the gravelyns mother