Billie Dunn had been dating Adkins for more than two years and had recently moved him into her home.
Adkins was named a suspect in the girl's disappearance this morning.
"It makes me really mad and it frustrates me," she said. "He needs to be talking and cooperating."
When asked to address Adkins directly, Dunn spoke with great emotion.
"Shawn, if you have nothing to hide, I really wish you would talk to he investigators and would get this cleared up," she said.
Dunn said she thinks it's a possibility that Adkins had something to do with Hailey's disappearance on Dec. 27, but her gut leans more toward abduction by a stranger.
"We live right near I-20, and that's something that has scared me," she said. "Hailey was home alone that day."
Dunn doesn't know what her future will with Adkins will be. For now, she has eliminated contact with him.
"I never through he could hurt me or the kids, but now I just don't know," she said. "If he did hurt my daughter I would be disgusted by that and would never speak to him again and hope he'd get what he deserves."
With each passing day, Dunn loses more and more hope of finding Hailey.
"I with I could be optimistic all the time, but it's hard."