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 What we know about Savannah Guthrie's missing mother. Trump urges taking election authority from states. Floridians won't be able to vote on legalizing pot this year. The voice behind 'Joy to the World' has died at 83. Report an error