We paid, and pay, the wages of everyone involved in locking that woman up - the police, the prosecutors, the jail staff.
It shouldn't take forming a political action group to fix things like this. That DA is unfit for purpose, his interest be damned.
Threatening people with charges if they don't take plea deals is an easy way for them to win. That's what led to a news item last year of some immigrant truck driver getting over 100 years in prison (plus mandatory minimums) because he didn't take a plea deal after his breaks failed and he hit a car and killed some people accidentally.
[1] https://www.fox29.com/news/truck-driver-rogel-aguilera-meder...
It may be how they view their role, and it may be how their incentives line up.
But it's not actually their job. I bet you know this, I'm just clarifying.
When the San Francisco DA's office was run by Chesa Boudin, I spoke with an attorney there. That attorney told me that the role of the DA's office was to 'deliver justice', and he was explicit about that meaning they wouldn't pursue all cases they thought they could win, and wouldn't seek maximum sentences they thought they could achieve.
Prior to working for the DA's office, he was a public defender, so perhaps this attitude isn't universal...