Foster Mother Held to Answer on Murder Charges for Two-Year-Old's Death

Testimony from medical experts casts doubt on defendant's claims of self-inflicted injuries.

Apr. 4, 2026 at 12:05am

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An extreme close-up photograph of a small, worn toy car against a pitch-black background, lit by a harsh, direct camera flash, creating a stark, gritty, investigative aesthetic.The harsh flash illuminates a somber reminder of the tragedy, as an investigation into a child's death in foster care continues.Oakland Today

During a preliminary hearing, a foster mother accused of murdering a two-year-old foster child in her care was held to answer on all charges. Testimony from medical experts found no basis for the defendant's claim that the child caused his own fatal head injuries through headbanging, and instead pointed to blunt force trauma consistent with repeated slamming. The judge cited the expert testimony in finding enough evidence to continue proceedings against the defendant.

Why it matters

This case highlights the vulnerability of children in the foster care system and the need for thorough investigations and accountability when a child dies under a foster parent's care. The medical evidence presented calls into question the defendant's story and raises concerns about potential abuse or neglect leading to the child's death.

The details

Ashley Pearce-Pifferini was charged with murder and assault on a child causing death for the 2021 death of two-year-old Phoenix Jayden Asti, her foster child. During the preliminary hearing, expert witnesses testified that the child's fatal head injuries, including bruising, nerve damage, and diffuse axonal injury, could not have been self-inflicted through headbanging as Pearce-Pifferini claimed. The medical experts stated the injuries were consistent with the child being repeatedly slammed. The judge found sufficient evidence to hold Pearce-Pifferini to answer on the charges and continue the case against her, despite her pleading not guilty.

  • The incident occurred in 2021.
  • Pearce-Pifferini was charged in 2024.
  • The preliminary hearing was held on April 3, 2026.

The players

Ashley Pearce-Pifferini

The foster mother accused of murdering the two-year-old foster child in her care.

Phoenix Jayden Asti

The two-year-old foster child who died from fatal head injuries while in Pearce-Pifferini's care.

Dr. Evan Matshes

An expert in child abuse autopsies who testified that the child's injuries, including diffuse axonal injury, could not have been self-inflicted.

James Crawford-Jakubiak

The medical director of the Center for Child Protection in Oakland who treated the child and testified the injuries were consistent with repeated slamming.

Whitney Timm

The deputy district attorney prosecuting the case.

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What they’re saying

“There was 'no question,' the boy was murdered.”

— Whitney Timm, Deputy District Attorney

“The injuries were consistent with the child being repeatedly slammed.”

— James Crawford-Jakubiak, Medical Director, Center for Child Protection

What’s next

Pearce-Pifferini's next court appearance is scheduled for April 17, where the case will continue to move forward.

The takeaway

This tragic case highlights the need for thorough investigations and accountability when a child dies in foster care. The medical evidence presented casts serious doubt on the defendant's claims, raising concerns about potential abuse or neglect that led to the child's death.