The two inmates spent three weeks on the run before Matt, 49, was shot and killed just a day after his birthday, while Sweat, 35, was shot and captured two days later.
Mitchell, a prison tailor shop worker at the maximum-security facility, had planned to pick up Matt and Sweat after their daring prison escape from the Clinton Correctional Facility in Dannemora, New York, on June 6, authorities said. But the 51-year-old got cold feet and never showed.
She was arrested less than a week after their escape and was charged with promoting prison contraband in the first degree, which is a felony, and criminal facilitation in the fourth degree, which is a misdemeanor.
New York State Police
The deal calls for a sentence of two to seven years, the Associated Press reports. According to the agreement, she will not face any additional charges for the alleged plot to murder her husband, an allegation she has denied despite Sweat's insistence otherwise.
"Joyce adamantly denies inmate Sweat's allegation that Joyce wanted them to kill her husband," her lawyer Stephen Johnston told PEOPLE in a statement last month.
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