Papini is scheduled to be sentenced in federal court Monday after agreeing to a plea deal earlier this year in the 2016 kidnapping hoax.
Prosecutors are also asking the court to make her pay more than $300,000 in restitution since she made money from GoFundMe accounts and state victims funds.
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In November 2016, Papini disappeared from her family in Redding after going out for a jog. She was reported missing, setting off a nationwide search and a media frenzy.
When she reappeared on the side of a road in Yolo County more than three weeks later, she said two women had kept her captive in a closet.
Investigators found inconsistencies with her story and eventually determined the kidnapping was a hoax.
In reality, Papini had spent the time staying with an ex-boyfriend in Orange County.
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Under the deal, Papini pleaded guilty in April to mail fraud and making false statements.
April 2022: Sherri Papini pleads guilty in kidnapping hoax
Sherri Papini case: Northern California woman pleads guilty to 2016 kidnapping hoax