"I'm so nervous; sick to my stomach; in tears," Elizabeth Flores — who plans on attending the Apr. 19 hearing — told RadarOnline.com.
"I need all the prayers I can get. I don't care how much time they get. They deserve what they get. I care about justice for my nieces and nephews," she explained.
David and Louise both pleaded guilty to horrific acts of child abuse against 12 of their 13 children on Feb. 22. The couple's shocking charges included adult abuse, child endangerment, false imprisonment and torture.
There is the possibility that some of the children could testify about what took place in their Perris, Calif., house of horrors before their parents' sentencing is announced.
"Right now, the children are deciding on whether they will be there, or speak. It's up to each one of them," said Jack Osborn, a lawyer representing the adult Turpin children.