Andrea Shaw, the Payette mother charged with two counts of first-degree murder in the deaths of her 18-month-old twins, pleaded not guilty Tuesday.Shaw appeared in court wearing an orange-and-white striped jail uniform and handc uffs. Her husband, Nate Shaw, and other family members sat in the courtroom.Before the hearing began, attorneys met behind closed doors with Judge Kiley Stuchlik for about 10 minutes.Shaw pleaded not guilty to both first-degree murder charges and requested a jury trial. The trial is scheduled to begin Jan. 11, 2027, and is expected to last three to four weeks. The court reserved time through Feb. 12.A status conference is scheduled for Oct. 15, followed by a pretrial conference on Dec. 8.After Tuesday's hearing, Shaw's defense attorney, Joe Filicetti, told Idaho News 6 he believes Shaw is innocent.I don't believe she's guilty. I think she's a good human being. I think she loved her twins, Filicetti said. I think when those twins died, I went to the memorial service. That was not a mother who murdered her children.WATCH: Payette mother accused of killing 18-month-old twins pleads not guilty. Mother charged in deaths of 18-month-old Payette twins pleads not guiltyShaw was indicted in June, more than a year after Dallas and Tyson Shaw were found dead in the bed they shared at the family's Payette home in May 2025.Prosecutors allege Shaw smothered the twins. Her defense disputes that account, arguing the children became seriously ill after receiving routine vaccinations in the days before their deaths.Filicetti said Tuesday that the defense is not arguing that vaccines alone explain the twins' deaths.This is not just vaccines bad and here's a death. That's not what the case is about, Filicetti said. There are a number of other things going on in the lives of these kids.Filicetti also pushed back on the conclusion that the fact both twins died at the same time means their deaths were homicides.That does not mean that you get to just say mathematically because two kids died, it must be...must be homicide or murder, and that's our position, Filicetti said.Filicetti said defense medical experts are examining samples from the twins and that he expects experts for the defense to challenge the state's conclusions about how the children died.Court documents filed in support of Shaw's request for a lower bond detail the defense's account of the days leading up to the twins' deaths. Shaw's husband said in an affidavit that the boys developed fevers and other symptoms after receiving vaccinations at a doctor's appointment. The defense has also submitted an affidavit from a physician who questioned whether the twins' deaths were caused by smothering.RELATED: 'Smothered' or vaccine reaction? New court docs reveal details at the center of Payette twins murder caseShaw remains held without bond after the judge revoked her initial $2 million bond. In July, the judge denied the defense's request to release Shaw on a reduced bond while the case proceeds.Idaho News 6 will continue following the case. ...read more read less