"That's a part of her that I didn't know," he said. "You can't really pick your friends for your kids, but you can really monitor them and know if you get a funny feeling about them."
Durst wonders how Tiffany, 21, got involved with the three people now charged in her death.
Terrence Andre McNeal, 20, Jannelle Kimberly Harris, 20, and Tiera Lachae Homes, 19, were arrested and charged with two counts each of first-degree murder. The three are being held without bail.
Harris and Homes are scheduled to appear in court in May, while McNeal was before a judge on Monday morning. Mug shots of the suspects had not been released Sunday, as police continued to investigate.
"What type of person are you that you're able to take someone's life like that," Durst wondered.
According to family members, Tiffany Durst was planning to marry her boyfriend Terence George, 22.
George was found shot to death in the couple's apartment on the 12200 block of East Kepner Place in Aurora on November 21, 2010.
Durst was last seen by her family on Nov. 18. Investigators initially called Durst a "person of interest" in the case. Police found her abandoned Oldsmobile on Jan. 4.
Tim Durst described the period while his daughter was missing as "a living hell."
Five months of uncertainty came to an end on April 7 when police recovered Tiffany's decomposing body from the Cherry Creek Spillway, west of South Chambers Road and south of East Yale Avenue.
"We don't have to keep looking at the news wondering where she's at," Durst said. "I wouldn't want nobody to go through that with their kids."
Durst credits his men's group, the "Fatherhood Initiative" which meets Tuesday evenings at the Epworth United Methodist Church in Denver, with helping him get through the painful ordeal.
He also offered some advice for other parents.
"Make sure you let them know that you love them," he said. "Because you never know. That might be the last time you might see them."
Funeral services for Tiffany Durst will be held this Thursday April 21 at 11 a.m. at the Good Shepherd Baptist Church at 2814 Ivy St. in Denver. A gathering will follow at 2135 Stout Street in Denver.
A Memorial fund has been established at Aurora Schools Federal Credit Union. Donations can be made to the "Memorial Fund for Tiffany Durst in care of Timothy Durst."
(KUSA-TV © 2011 Multimedia Holdings Corporation)