McCready, 29, has been charged in Lake Havasu with hindering prosecution and unlawful use of a means of transportation related to the theft of a pickup belonging to a Lake Havasu City boat salesman.
But she told the Las Vegas Journal-Review the entire incident was a misunderstanding and she and her co-defendant, Guillan Cissen-DeAngelo, had been using the truck with the owner's permission.
However, she described Cissen-DeAngelo as an obsessed con artist who took advantage of her when she was emotionally vulnerable.
Currently jailed in Mohave County, Ariz., Cissen-DeAngelo told the newspaper McCready "is completely, utterly innocent of any type of law that they're alleging she has broken."
"And for that matter, I am, too," he added.
McCready's arraignment was rescheduled for Aug. 30 while she recovers from a Florida suicide attempt that left her hospitalized for several days.
2014: The Year in Music [PHOTOS]