Woman who killed Tyla Whitebird gets 11 years for manslaughter Vianna Moberly, 20, pleaded guilty to manslaughter for repeatedly stabbing Whitebird as they walked through a field on Dec. 25, 2023.

Woman told police she spontaneously stabbed Tyla Whitebird because she was being 'annoying' Vianna Gracie Moberly said she became angry enough to "black out" and stab Whitebird until she stopped ...