Joyce Mitchell Pleads Guilty in NY Prison Escape Prison seamstress admits charges in escape of Richard Matt, David Sweat By Newser Editors and Wire Services Posted Jul 28, 2015 9:55 AM CDT 17 comments Comments In this June 15, 2015, file photo, Joyce Mitchell appears before Judge Mark Rogers in Plattsburgh, NY, City Court for a hearing. (G.N. Miller/New York Post via AP, Pool, File) (Newser) – A New York prison employee has pleaded guilty to helping two killers escape last month. Joyce Mitchell, a tailor shop instructor at Clinton Correctional Facility, was jailed shortly after Richard Matt and David Sweat escaped on June 6. Matt was shot and killed three weeks later. Sweat was captured and sent to another prison. Mitchell admitted providing hacksaw blades, chisels, a punch tool, and a screwdriver to Matt. Authorities say she agreed to be their getaway driver but backed out at the last moment. Mitchell was in court this morning and pleaded guilty to first-degree promoting prison contraband and fourth-degree criminal facilitation. The 51-year-old faces a sentence ranging from 2 1/3 years to 7 years in prison.