SANTA ROSA, Calif. (AP) — Prosecutors in Northern California filed murder charges against the parents of a 15-month-old toddler who died in May after she ingested fentanyl authorities believe her mother had been using. Prosecutors on Thursday also charged Evan Frostick, 26, and Madison Bernard, 23, with child cruelty and tacked on a sentence-enhancing charge alleging their actions willfully caused the suffering of a child, the Press Democrat reported. The couple, who police have described as boyfriend and girlfriend, were briefly arrested on suspicion of child cruelty on May 9, the day their daughter died, but they were released two days later pending further investigation to determine whether fentanyl played a role in the child’s death. Frostick is being represented by the Sonoma County public defender Lynn Slater, who said Friday she took over the case Thursday and couldn’t comment. It was not immediately known if Bernard has an attorney who can speak on her behalf. She is not represented by the public defender’s office.