Is SYG really even the issue here?
It would seam to me that discharging a firearm in city limits does not constitute life sentence, this is cruel and unusual punishment, particularly when paired up against SYG law, where someone can actually kill someone and not see any jail time. Somewhere they are getting blended and i'm not sure they need to be.
Also,
Women have gotten away with killing abusive husbands in the past on self defense.
Still though fact remains her own husband said they were warning shots, where the DA is stringing together 60 years on an illegal weapons discharge is outlandish and I'd argue criminal.