Dana Holmes filed a lawsuit against the department over what she calls an improper strip search following her arrest last May.
The incident was caught on the department's surveillance cameras.
The LaSalle County Sheriff says the accusations are false and have resulted in death threats against some of its officers.
On Thursday, the department says she was not strip-searched and left naked in a cell.
The statement says Holmes was placed in a padded cell so would calm down after twice kicking at a female officer.
And that after her clothes were removed, she was promptly provided with a tear-proof suit.
The sheriff also says Holmes was not thrown to the ground, but taken down in in a controlled manner with no injuries.