She got lucky...probably saw how most people who use guns in self defense are treated.
She probably didn't want the hassle of going to court, being charged with murder, spending her life fortune to defend herself.
Was she innocent yup. was the law on her side, most likely. Would all these factors STOP a left-wing prosecutor from harassing her?
Nope.
Hell, for all that's happened in the past; the DOJ might step in and charge her for a civil rights violation.