To preface, I am not defending the police or the piece of shit abuser. This was handled extraordinarily horrendously. Police even knew about the guy’s crimes and let him off without a slap on the wrist.
The basis of my thoughts comes from this paragraph in the article:
Police said that Kizer travelled from Milwaukee to Volar’s home in Kenosha in June 2018 armed with a gun. She shot him twice in the head, set his house on fire and took his car.
I don’t know any info beyond what the article gives, but it sounds like at that point she wasn’t being held captive and murdered to get away from her abuser. She actively plotted and had the freedom to travel and kill him. Unless there’s something I’m missing, I don’t think I could consider this as actively being self defense.