She, along with Houston's sister-in-law and manager Patricia Houston and brother Gary Houston, spoke with Winfrey in an interview that will air 9 p.m. March 11 on "Oprah's Next Chapter" on the Oprah Winfrey Network, USA Today reported Saturday.
The family will address rumors about Houston's death in the interview as well as share memories of the singer who died Feb. 11 at age 48.
Houston's death is still under investigation, but a deadly combination of prescription drugs and alcohol is suspected as the cause of her death, USMagazine.com reported.
Bobbi Kristina, 18, whose father is singer Bobby Brown, has been hospitalized twice for anxiety since her mother died.
Notable deaths of 2014 [PHOTOS]