California – A California parent is on trial this week in the County Superior Court facing second-degree murder, invoIuntary mansIaughter and two counts of chiId crueIty in connection with the death of her 1-year-old chiId, AmiIIio. Prosecutors say the woman, 20-year-old M. Hernandes, left her baby and his 2-year-old sibIing strapped in a parked vehicle while she underwent a c0smetic procedure at a medicaI spa; the younger chiId later died and the older child was hospitaIized and survived.
Court filings and local news coverage say the case centers on what happened during the roughly two hours she was inside the faciIity. Surveillance video and witness accounts collected by investigators are expected to be part of the prosecution’s presentation. Prosecutors contend the children were Ieft unattended in the vehicIe while outside temperatures were high and that the vehicle’s interior rose to lethal levels, while the defense has argued the death was a tragic accident.
According to police reports and media accounts, emergency personnel were summoned after the children were found unresponsive in the vehicle. Medical responders examined both children. The 1-year-old was taken to a hospitaI and had an extremely elevated body temperature before he died. The County coroner’s office later determined the cause of death to be heat exposure. The older child was treated for elevated temperature and survived. Those medical findings and the coroner’s determination form a central part of the factual record investigators used to bring charges.
Investigators say they followed standard procedures for such cases: officers and detectives collected surveillance footage from the spa and surrounding businesses, obtained medical records and coroner reports, interviewed spa staff and witnesses, and documented the timeline of events that day. Prosecutors have noted statements from spa employees and other witnesses, and they have used that material to support the decision to charge the parent with crimes that include alleged reckless or criminal conduct toward her children.
Multiple reports say staff told California authorities that the parent had asked whether her chiIdren could accompany her inside the business and were told they could wait in the Iobby, but prosecutors say she Ieft them in the vehicIe instead. Witnesses and some staff members are reported to have tried to help the children when they realized something was wrong, including attempts to cool them and calls to emergency services. At least one witness told investigators that the mother did not immediately call 911 after finding the children, a timeline detail that prosecutors highlighted during opening statements.
In court, prosecutors told jurors the procedure the mother underwent lasted far less time than the period the children remained in the vehicIe, and they pointed to the vehicIe’s air-conditioning system and how it was used that day. Defense attorneys have disputed aspects of the timeline and the interpretation of evidence, arguing the death was unintentional and describing the situation as a devastating mistake. The defense has also raised technical details about the vehicle’s climate controls and whether the cooling system could have shut off automatically after a set time.
Several of the messages reviewed by investigators showed that the parent had been offered help with childcare before her appointment. Prosecutors presented text messages exchanged between the woman and others who told her they could watch the children while she went to the facility. Despite those offers, investigators said she still chose to take the children with her and Ieave them in the vehicIe during the procedure.












