"We're sisters, we're always gonna fight," the "Un-Break My Heart" singer continued. "That's what sisters do, OK, it's a rite of passage to fuss and fight but in the end, we're always there. We can be fussing and fighting with each other even on the show and we'd be right there, 'OK, I'm bringing the kids over' and not talk to each other, but we'll be cooking together." 
 
Though Traci's death devastated the family, Toni said they were "very fortunate to have had my sister with us for as long as we did."
 
The "Breathe Again" singer also shared details about the family's final moments with Traci—mom of Kevin Surratt Jr., 26, who she shared with husband Kevin Surratt.