The mother of slain AJ Freund, 5, has pleaded guilty to murder for beating him to death in April. JoAnn Cunningham, 36, entered the plea at the McHenry County courthouse, Illinois. She faces 20 to 60 years in prison. AJ’s father Andrew told investigators that Cunningham had punished AJ with a cold shower after the boy ’lied about soiled underwear’. She then put AJ to bed ’cold, wet, and naked’.