Cissy Houston's Memoir on Daughter

Nearly a year after her death, Whitney Houston's mother is documenting her famous daughter's fight with drug addiction in a new memoir, "Remembering Whitney."

In the book, Cissy Houston questions whether or not she could have saved her child.Whitney was found drowned in a hotel bathtub with traces of cocaine in her system.Cissy is expected to sit down with Oprah Winfrey next week for her first in-depth interview since Whitney's death.