Point Last Seen (1998)

She searches for another woman's child refusing to give up... While praying someone will find her own children.

After Rachel Myles' abusive ex-husband vanishes with their children, she takes refuge in the solitude of the desert, where she makes a new career as a search-and-rescue tracker. When a young girl disappears, she searches the desert while praying and hoping for the safe return of her own children. Inspired by actual events based upon the memoir by Hannah Nyala.