Whitney Houston

Whitney Houston's mom 'angry' the star died alone

Jan. 23, 2013 at 5:42 PM ET

Christopher Polk / Getty Images file /
Cissy Houston performed at the 2012 BET Awards on July 1, 2012, in Los Angeles, with an image of daughter Whitney behind her.

Whitney Houston's mother, Cissy, is talking about her daughter's sudden passing in a new memoir titled "Remember Whitney: My Story of Love, Loss, and the Night the Music Stopped."

In excerpts obtained by People, Cissy wrote, "I'm angry she died alone, in those conditions."

The Grammy-winning singer was found dead, face down in her bathtub, at the Beverly Hills Hilton on Feb. 11, 2012, the night before the Grammy Awards. The final coroner's report listed the cause of death as accidental drowning and "effects of atherosclerotic heart disease and cocaine use." The document also indicated that Houston had cocaine, marijuana, Xanax, Benadryl and muscle relaxants in her system when she passed away.

"She started partying and she didn't really know how to stop. I used to wonder what she was doing at night, where she was," Cissy also wrote. The elder Houston also wrote that her daughter "hid" from her, and that she doesn't blame the singer's ex-husband, Bobby Brown, for her drug problem.

"I blame him for the way he treated her," she wrote, according to the excerpts published in People, "but I don't blame him for her drug problems."

Watch the TODAY show Monday for Cissy Houston's appearance.

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