Makell's mother said the only time her violent career-criminal daughter was sober was when she was...incarcerated.
Her autopsy showed that she was full of opiates, cocaine, benzodiazepines, fentanyl, heroin, and buprenorphine.
So: Drug laws failed and gun laws failed.
In fact the entire criminal justice system failed.
What's the only thing that would've worked?
A long sentence in a state psychiatric hospital.