IOWA CITY (AP) After submitting to a second polygraph test, the mother of one of two missing Iowa cousins said Monday that the results should prove that she had nothing to do with their disappearance and allow investigators to focus their attention elsewhere.

Misty Cook-Morrissey said a state agent asked during Monday's polygraph whether she had anything to do with the abduction of her daughter, 10-year-old Lyric Cook-Morrissey, and niece, 8-year-old Elizabeth Collins. She said she was asked whether she knows where they are and if she could take investigators to them, adding she answered "no" to all those questions.

"It went well," she said in a phone interview. "They can rule me out of their book and move on to something else."

The girls have been missing since they went for a bike ride July 13 in Evansdale, a town of 4,700 people in northeast Iowa, where their bikes and a purse were found near a lake.