Not explicitly Norse but the Celtic chooser of the slain? Sounds like a Valkyrie to me.The Morrigan - Shape-shifting Celtic goddess of War, Fate and Death. Story in "The GODDESSES / Psychology of Female Power"
“In Norse mythology, Hel is a being who presides over a realm of the same name, where she receives a portion of the dead. She is referred to as a daughter of Loki, and is described as having been appointed by the god Odin. Her appearance is described as