In the particular case, I am truly sorry that the victim apparently did not think of self-defense as an option.
From the accounts in the thread-head article, it seems as though she and the perp "talked through" the problems--at least until recently.
She probably figured that "talking through" would continue to work, although she SHOULD have thought about other options as well.
FL is a CCW State. Wouldn't have been too hard for her...
I'd wager that she had a restraining order against him if she'd already filed for divorce. A mutual restraining order is customary in divorce proceedings. Women are so naive to think that a piece of paper will protect them from someone hell bent on revenge. What a sad story.