Kimberly Kubina entered the plea on Tuesday before Lake Criminal Court Judge Diane Boswell.
Kubina and Choate are accused of killing Choate’s 13-year-old son, Christian, in 2009. The boy's body was found buried in a shallow grave in Colfax Mobile Home Park in Gary. Christian was reportedly beaten, deprived of food and kept in a dog cage for up to a year before his death.
The couple’s murder trial is set for August 13 2012. A hearing for Kubina is scheduled for August 28, 2012.