Bobbi Kristina, Patricia Houston Open Up to Oprah Winfrey

While admitting she was concerned about Whitney's behavior at a party two nights before her death, Pat said she didn't think the star was abusing drugs in her final days.

Both Pat and her husband Gary, Whitney's older brother, insisted to Winfrey that no one tried to keep the star's ex-husband, Bobby Brown, from attending Houston's funeral. They played down reports of any tensions between him and the Houston family.

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Gary Houston admitted to Winfrey that his mother, Cissy, is having a hard time with the death of her only daughter but said Cissy seemed to know that her life would be cut short. "Whitney is not going to be with us too long my mother would say," he told Winfrey. "She's an angel."

Bobbi Kristina broke down the weekend Houston died and had to be taken to the hospital twice for stress and anxiety. Still, she maintains nothing but a positive outlook on her mother and her legacy.

"All that negativity, it's garbage," she said of rumors surrounding her mother's death. "That's not my mother. That's not who she is."