The singer has incurred substantial legal bills following her arrest for allegedly attacking a fan and her conviction for illegally possessing prescription drugs. She is expected to receive a $540,000 advance for her book, World Entertainment News Network reported Monday.
The singer has experienced an eventful year -- she has battled a heroin addiction and lost custody of her 12-year-old daughter.
"It's all going to come spewing out -- every last dirty little secret," she said. "If it puts someone's nose out of joint that's tough luck."
The family of her late husband are concerned about what information the book might contain. "It's painful to think that Kurt and Courtney's secrets will come out," a source close to the Cobain family told World Entertainment News.