Updated

The Latest on the investigation into the discovery of child's remains in Illinois after a woman told police in Las Vegas that her husband killed their 6-year-old daughter in 2013 (all times local):

9:15 p.m.

A mother and father accused in Illinois of concealing the death of a child whose body was found in the garage of an abandoned St. Louis-area house have made separate appearances in different Las Vegas courts.

Elizabeth Odell-Quate told a judge on Monday that she won't fight her return in custody to Belleville, Illinois, to face a felony charge.

In another courtroom, a judge postponed Jason Quate's arraignment on felony child abuse charges until Friday.

A prosecutor says other charges might be added by then.

Jason Quate already has been charged with forcing his wife into prostitution, and he's due in court Tuesday on a child pornography charge.

The dead child hasn't been formally identified. Police in Illinois believe she was the couple's daughter and died in 2013, when she was 6.

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7:20 a.m.

A mother and father under investigation after the remains of a child were found in the garage of an abandoned St. Louis-area house are due to make appearances in separate Las Vegas courts.

Jason Quate is due Monday to face felony child abuse charges.

He was in court Friday on charges that he forced his wife into prostitution.

The mother is due for an extradition hearing Monday on an unspecified out-of-state warrant.

No charges have been filed in the child's death. Police in Illinois believe she was the couple's daughter and died in 2013, when she was 6. They're still investigating.

The Associated Press is withholding the mother's name to avoid identifying the couple's now-teenage children and because authorities say she's considered a victim in her husband's sex trafficking and prostitution case.

She hasn't been charged with a crime in Las Vegas.

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This story corrects references to the child to reflect that the identity has not been established.