Cissy Houston, the 79-year-old mother of the late singer, has admitted that the death of her beloved daughter Whitney has left her wondering if she could have saved her life or done more to help.

She spoke exclusively to People magazine, which will come out on Friday of this week, and explained that she can't help but wonder about her parenting skills after Whitney (48) was found dead in a bath tub back in 2012:

"Was I a good mother? I still wonder if I could have saved her somehow. But there's no book written on how to be a parent. You do the best you can."

Cissy also spent time during the interview promoting her upcoming memoir, entitled 'Remembering Whitney', and shared some excerpts from it: "I had no idea about Nippy's 'partying.' And the truth is, back then I didn't really want to know about it."

She even told People that she's concerned that Whitney's daughter, Bobbi, might meet the same fate and said she is "trying to make sure she doesn't (follow the same path)".

Watch Houston's 'Celebrate' video, from the movie 'Sparkle', below: