Police in Colorado are trying to piece together the death of a Leelanau County ski instructor. The body of Grace McNeil was found in a tree well under two feet of snow Wednesday morning. She was at the base of a double-black diamond run in the Steamboat Ski Area. McNeil was from cedar and was a children's ski instructor at Arapahoe Basin Ski and Snowboard Area. The coroner says she likely died Tuesday afternoon. Although she was wearing a helmet, he said tree wells can cause suffocation.