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She is better known as Mahidevran Gulbahar, which is why she is hard to find in wikipedia.
She was sent into forced retirement after her son's death, and her disgrace, initially in poverty. After her rival's influence waned, she was "rehabilitated" after a fashion with a monthly "allowance" for living expenses. This rival died five years after her son's death in 1553, the Sultan died more than ten years later, but she survived until the early 1580s.