Bobbi Parker, 49, allegedly aided Randolph Dial's escaped from the prison her husband ran, after falling in love with, prosecutors claimed.
The pair met in a prison pottery program that was based in the deputy warden's garage on the Granite prison grounds.
But Defense attorneys claim Dial drugged and kidnapped her before holding her hostage for more than a decade by threatening to harm her family, including her two daughters, if she fled.
Dial pleaded guilty to escape before he died in 2007 at age 62, but maintained until his death that he abducted Bobbi Parker at knifepoint and forced her to drive him from the prison in the family van, according to the Houston Chronicle.
The two were found living on a Texas ranch in 2005.
Parker faces up to 10 years in prison if convicted, while Dial, who before his escape was serving life for first degree murder, died in prison in 2007.