It's literally the Taan Awga myth from Haida culture
https://haidalegends.blogspot.com/2011/12/haida-mother-bear-story.htmlAs she followed at the end of the group, the girl's foot slipped in some bear dung and her forehead strap, which held the pack filled with berries to her back, broke. She let out an angry laugh. The others went on. Again she should have sung, but she only complained. The bears noted this and said, "Does she speak of us?" It was growing dark. Near her appeared two young men who looked like brothers. One said, "Come with us and we will help you with your berries". As the aristocratic young lady followed the, she saw that they wore bear robes.
It was dark when they arrived at a large house near a rock slide high on the mountain slope. All the people inside, sitting around a small fire, were wearing bearskins also. Grandmother Mouse ran up to the girl and squeaked to her that she had been taken into the bear den and was to become one of them. The hair on her robe was already longer and more like a bear's. She was frightened. One of the young bears, the son of a chief, came up to her and said, "You will live if you become my wife. Otherwise you will die."
She lived on as the wife of the bear, tending the fire in the dark house. She noticed that whenever the Bear People went outside they put on their bear coats and became like the animal. In the winter she was pregnant, and her husband took her to a cliff cave near the old home, where she gave birth to twins, which were half human and half bear.
The Bear Husband knew that he must die, but before he was killed by the woman's brothers, he taught her and the Bear Sons the songs that the hunters must use over his dead body to ensure their good luck. He willed his skin to her father, who was a chief. The young men then killed the bear, smoking him out of the cave and spearing him. They spared the two children, taking them with the Bear Wife back to her People.
