By Brittany Hobson WINNIPEG,MAN-CP-When Elle Harris got a phone call about potential human remains found at the landfill where searchers are trying to find her mother and another slain First Nations woman, she was overcome with a sinking feeling. “My heart dropped right down to my stomach,” she told reporters Thursday. Since December, trained search teams, including forensic anthropologists, have been combing through debris at the Prairie Green landfill north of Winnipeg with the hopes of finding the remains of Morgan Harris and Marcedes Myran. The two women were killed at the hands of a serial killer in 2022. The Manitoba government, which is spearheading the search with guidance from family members and First Nations leaders, announced Wednesday that suspected human remains had been discovered at the site. It could…