The Contra Costa County District Attorney's Office filed seven felony charges Monday, July 27, against a former temporary behavioral health clinician accused of sexually abusing a teenage boy who was her client at the county's juvenile detention center in Martinez.

Sofia Ann-Buitron Drotts, 26, of San Francisco faces charges including unlawful intercourse with a minor, sending harmful matter to a minor, and possession of child pornography, prosecutors said. The same day, the boy's family filed a civil claim against the county with Oakland-based civil rights attorney John Burris.

Concord police arrested Drotts on Tuesday, July 14, after a supervisor in the Contra Costa County Probation Department tipped them off to an alleged sexual relationship between Drotts and a 17-year-old boy, according to the DA's office.

Drotts worked as a temporary behavioral health clinician at the John A. Davis Juvenile Detention Center in Martinez, where she was assigned the teen as a therapy client, prosecutors said. The civil claim alleges she began grooming the boy in 2024, when he was 14 or 15 and serving a two-year sentence at the facility.

After the boy's release from juvenile hall in April 2026, Drotts allegedly continued working with him as part of his "wraparound" probation support through Contra Costa Health. Prosecutors said the alleged sexual contact occurred between April 1 and July 14.

The civil claim, filed as a precursor to a lawsuit, paints a detailed picture of the alleged grooming. According to the San Francisco Chronicle, the filing alleges Drotts contacted the boy outside working hours using a disguised phone number and another teenager's identity. She allegedly encouraged him to miss school and violate his curfew so they could meet, and the boy sometimes stayed overnight at her San Francisco home.

The abuse came to light in June 2026 after the boy broke the terms of his probation. During a search of his home, county probation officers and Concord police found evidence. That led to Drotts' arrest.

"This is a total breakdown in the supervisory chain of command," Burris told the San Francisco Chronicle. "There is no way she should be put in a position where she is not monitored closely."

Burris said Drotts was approximately 24 when she began working with the boy and, as a new hire with little experience, should have been closely supervised. The claim accuses county agencies of negligent hiring, supervision, and retention, and of failing to investigate red flags or file state-mandated reports about suspected misconduct.

The claim names Contra Costa County, Contra Costa Health, the county's juvenile detention facility, and the probation department. The boy's mother said in a statement released through Burris that the family trusted professionals with their son's healing and that trust "was betrayed and fundamentally shattered."

Contra Costa Health spokesperson Will Harper said in a Saturday, July 18 statement that the department was aware a temporary employee had been arrested, had "taken appropriate administrative action," and was cooperating with law enforcement. County officials did not respond to requests for comment Monday on the civil claim or the criminal charges.

No arraignment date has been announced.

Residents with information related to the case can contact the Concord Police Department at (925) 671-3220.