The court also heard that King was likely killed with either a chisel or pickaxe and that Tenret returned to the house for several weeks after the murder to take food or have a shower.
She claims she was forced to stay in the back portion of the house whenever they went to work and was given little food to eat.
A video clip of the incident on Sept 6 which has gone viral over social media shows a man being repeatedly hit with a cane in his house.
They claim the woman volunteered to take care of the children while they attended two-day course to get factory jobs.
Neighbour of family slaughtered in Thursday's attack relates the horror she encountered at the scene.
Judicial Commissioner Shariff Abu Samah, in sentencing him to 20 years in jail, tells accused his act was akin to “killing your own mother”.