mature minor doctrine

On February 22, 2022, Kensey Dishman died. She was thirteen years old. Doctors believe Kensey, a high-risk patient, died of COVID-19-related causes.  Kensey had asthma, a condition for which vaccination is recommended. Yet, despite her asthma, she wasn’t vaccinated and wasn’t masked. A week before her death, her school district removed mask mandates. Her choice was to refuse vaccination; her divorced parents were conflicted. Her mother and step-dad, vaccinated themselves, urged Kensey to get vaccinated. Her biological father agreed with her choice not to vaccinate. Normally thirteen-year-olds aren’t allowed to make significant health-related decisions for themselves. So, what happened here?