Gabby Petito's family have said they didn't see any "red flags" in Petito's relationship with Brian Laundrie.
In an interview to Dr. Oz, Petito's parents and step-parents opened up about the aftermath of the case, and whether they ever suspected the travel vlogger was being abused by her fiancé.
Petito's mother, Nicole Schmidt, said she wished her daughter had been honest with her about what was going on.
"I don't know why Gabby didn't open up to me about certain things," she said.
"We just didn't see any red flags," she added.
Petito's remains were found in Grand Teton National Park on September 19, 2021, after the 22-year-old went missing during a road trip with her fiance. Teton County Coroner announced that she died from strangulation.
Petito's fiancé, 23-year-old Laundrie, was the subject of a nationwide manhunt before his remains were discovered in Myakkahatchee Creek Environmental Park on October 21 2021, where he likely died by suicide.
The interview with Dr Oz touches on how Laundrie was able to fool those around him. Petito's father, Joe Petito, compared his behavior to that of a typical abuser, saying: "The way that the abuser works is to shame the victim and continually shame the victim to where they start believing that shame is theirs to hold."
He added that when the victim is shamed like this, they're less likely to "go out and tell you what's going on".
Petito's parents and step-parents also opened up about their trip to Wyoming following Petito's death. The four of them traveled together to visit the place where Petito's remains were found.
"It almost felt like her home. Her final resting place" said Petito's mother.
"Such a beautiful, peaceful place to be. And we went there to bring her home and that's what we did," she said.
Following their daughter's death, Petito's family launched the Gabby Petito Foundation. The organization will aim to help find missing persons and support domestic violence charities and advocacy groups.