Celebrity | Sherry Johnston Levi's Mom Pleads, Will Likely Get 3 Years Takes a plea deal in exchange for shorter sentence By Evann Gastaldo Posted Aug 20, 2009 7:15 AM CDT Copied In this Tuesday, Sept. 2, 2008 file photo, Sherry Johnston, mother of Levi Johnston, talks about her son at her home in Wasilla, Alaska. (AP Photo/Al Grillo) Sherry Johnston, the woman the world has to thank for the existence of Levi Johnston, is headed off to the pokey after taking a plea deal yesterday in her OxyContin-dealing case that will likely land her behind bars for three years, the Anchorage Daily News reports. Johnston pleaded guilty to one count in exchange for five others being dropped. She'll await her November sentencing at a correctional center, but her lawyers hope she'll be allowed to serve her sentence on house arrest. Read These Next The gunman who killed 4 at a Michigan church was an ex-marine. 'We heard a big bang,' says churchgoer in Michigan Skydivers leap from plane 2 minutes before fatal crash. Multiple people have been shot at a Mormon church in Michigan. Report an error