J.G.

BACKGROUND

Detention In July 2023, the Agency filed a section 300 petition on behalf of then, 16-month-old Minor alleging failure to protect (§ 300, subd. (b)) and abuse of a sibling (id., subd. (j)).2 Specifically, the petition alleged: there was a substantial risk of harm because Mother, who had been diagnosed with mental health disorders, was not participating in her mental health treatment or taking psychiatric medication; Mother has substance abuse issues, which required assessment and treatment, and she had tested positively for fentanyl and marijuana in December 2022; Mother left Minor in the care of maternal grandmother “despite extensive concerns” about the latter’s ability to care for the Minor (boldface & capitalization omitted); Mother and Father3 have a history of domestic violence against each other; parents have a “long extensive CPS history” (boldface & capitalization omitted), which included several referrals and an active current dependency case involving Minor’s brother; and Mother’s parental rights had been terminated for Minor’s two older half-siblings. At the detention hearing, the court found a prima facie case had been made that Minor came within section…