WICHITA, Kan. (AP) — A Wichita woman has been sentenced to 10 ½ years in prison for a knife attack that severely injured her 90-year-old grandfather and an attack on her 52-year-old mother.

26-year-old Kerri Telford pleaded guilty to aggravated battery in the February 2017 attack on her mother. She pleaded guilty to attempted second-degree murder in the August 2017 stabbing of her grandfather.

Authorities say Telford was living with her grandfather when she assaulted him with a kitchen carving knife with a six-inch blade. A police affidavit says she blamed “the voices” for the attack.

Telford was released from a mental health treatment center a few days prior to the attack.