Oprah Comforts Bobbi Kristina in Upcoming Interview

A day after it was announced that the former queen of daytime talk Oprah Winfrey had nabbed Bobbi Kristina's first interview since the death of her mother Whitney Houston, Winfrey's network released a trailer for the upcoming interview showing Winfrey comforting the 18-year-old girl.

"The world lost an icon, they lost a mother and a sister," Winfrey says in the trailer while a picture of Houston with her sister-in-law Patricia Houston and daughter Bobbi Kristina is shown.

Winfrey's interview with Houston's family, including her brother Gary and his wife Patricia, the singer's manager, will air on "Oprah's Next Chapter" at 9 p.m. Sunday on OWN. It's the family's first sit-down interview since the singer's sudden death Feb. 11.

In the trailer, Winfrey refers to Bobbi Kristina as "the love of Whitney's life, her only child."

According to a network press release, Houston's daughter will share "personal memories of her mom and how she would like the iconic superstar to be remembered."

"The family also addresses the rumors and speculation surrounding Houston's death," the press release said.

According to TMZ, Bobbi Kristina told friends that she agreed to sit down with Winfrey because she "was loyal to my mom, and never did my mother wrong, or made her look bad. She always looked out for my mom."

Before the interview, OWN will re-air its special, "Remembering Whitney: The Oprah Interview," which features the singer's 2009 interview on "The Oprah Winfrey Show" and Winfrey's personal memories of Houston.