Rangers are searching Grand Canyon National Park for a 21-year-old woman who .
Kaitlin Anne Kenney, of Englewood, Colorado, was last seen on Friday night near Tapeats Creek. While NPS officials have only said that they are searching for Kenney, her mother, Linnea Kenney, wrote on Facebook that she believes her daughter drowned in the river.
The family told they think she may have gotten up to go to the bathroom during the night, become disoriented, and fallen in. It was below zero the night she disappeared.