I read this story around 1996. It was probably no more than 10-15 years old then. It was in an anthology book which may have been Nebula showcase or Hugo winners anthology but may have been an original multiauthor anthology. In the story, a lady is looking for her sister and travels to the planet where she was last known to be. She hikes into the wilderness, eventually finding natives familiar with her sister. In the story, memories can be transferred by ingestion of brain matter, and the protagonist is able to discover what happened to her sister, maybe from a native who has her sister's memories through that mechanism. Parts of my recollection could be way off, but that's the essence of it that I remember. Thanks to anyone who has any ideas!
Edit for additional info after reading the guide to asking questions: hardback book, anthology with science fiction stories from multiple authors; i don't think it was an author i was very familiar with at the time, so not niven, asimov, heinlein, clarke, probably not one of the really bigtime authors at the time but it could have been someone like swanwick who i just hadn't been exposed to much. The natives were humanoid, and I think maybe hairy. They were felt to be savage or uncivilized but i don't think necessarily warlike or violent. Lived in small groups i think. The missing sister may have been on the planet for an anthropological science mission. I feel like there were not many humans on the planet.