On Monday, Billie spoke out against some of the people who have been pointing the finger at her and her family regarding Hailey's disappearance.
ďItís completely ridiculous how people who donít know me judge me or my home life or the way I parent," Dunn told KTAB's Victor Sotelo. "I feel like Iím a wonderful mom. Although I lost my daughter, I did the best I could and I will continue to do so.Ē
During Monday night's broadcast on HLN, Nancy Grace asked Billie Dunn if she took drugs prior to her polygraph tests and if that might have caused the "inconsistencies."
On the issue of inconsistent statements, Grace asked Hailey's mother Billie exactly what was inconsistent about the statements she made to authorities.
"I don't know," Dunn said. "I asked one of the Rangers about that and he's supposed to be getting back to me."
WOAI News Radio reporter Michael Board said investigators feel some of the witnesses may not be credible due to a history of drug use.
"I'm a credible witness," said an emotional Billie Dunn. "I'm not a liar."
Billie Dunn said last week that she and her boyfriend, Shawn Adkins, both wanted to take polygraphs one morning, but were told that the anti-anxiety medication they had taken the night before would affect the outcome of the polygraph. It was delayed until the following day.
Hailey's father, Clint Dunn, does have a history with the law, having been convicted most recently of possession of marijuana. He was arrested last January and sentenced in May to six months of probation, according to records from the Texas Department of Public Safety.
In addition to a handful of marijuana convictions, Dunn was sentenced in 1994 to two years in prison and five years probation for burglary of a building. He was 17 years old at the time.
Both Billie and Clint Dunn, who are estranged, have been eager to participate in the investigation in order to find their daughter, who has been missing for more than two weeks.