Mrs. Barnes was the mother of Binky Barnes, and the wife of Mr. Barnes. She had an adopted daughter, Mei Lin, but returned her to the adoption center (Return to Sender). She was killed by Arthur Read on June 4, 2014 (A Whale of a Slaughter).


Mrs. Barnes married Mr. Barnes, and they later had Shelley Barnes, who the called "Binky". Eight years later, they adopted a bear named Mei Lin, who they soon returned to the adoption center (Return to Sender).


Mrs. Barnes was walking on the shores of Whale Lake on June 4, 2014, just as Arthur and David Read were harpooning the lake, searching for the legendary Whale Lake Whale. Arthur mistook Mrs. Barnes for a whale, and he harpooned her in the chest, killing her (A Whale of a Slaughter).