A Pennsylvania woman has pleaded guilty to child endangerment for letting her kids live in deplorable conditions, which were discovered when her 4-year-old son accidentally shot his 2-year-old brother while the woman napped.

The Meadville Tribune (http://bit.ly/1Fzpiwi ) reports 24-year-old Tiffany Whitman, of Wayne Township, pleaded guilty Thursday in Crawford County. Her husband, 24-year-old Mark Whitman, pleaded guilty in December to the same charge because of the home's condition, plus endangerment charges for leaving the gun accessible to young children.

The couple remain free pending sentencing. Tiffany Whitman faces up to seven years in prison when she's sentenced March 5. Her husband faces up to nine years when he's sentenced Feb. 24.

Their 2-year-old son survived the shooting.

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Information from: The Meadville Tribune, http://www.meadvilletribune.com