(Seattle, WA) -- A Spokane woman is facing a murder charge in the death of her 15-month-old son at a Redmond, Washington-area home. Bail is set at one-million-dollars for Tami Christianson, who remains in the King County Jail. She's accused of strangling the boy at her parents' home last Saturday. Authorities say Christianson has a history of mental illness and had threatened to kill the baby when he was two-months-old.