Hailey's mom now says she thinks there is another person to be investigated.
"Investigators know about it but haven't questioned him. They can't find him. He did threaten to hurt me and Hailey and he hasn't been talked to and he hasn't been found," said Dunn.
Dunn didn't elaborate beyond that point.
Overall, Billie Dunn said she is happy with the way the investigation is being handled. She said she knows investigators want to find her daughter as badly as she does.
Officials said they are working all leads as a criminal investigation.
Law enforcement was out with dogs in Scurry and Mitchell counties. They were looking over places over interest and places leads have led them.