I meant why did she do it?
Reopening the case? It was never closed. Murders don’t have a statute of limitations.
You mean her side of the story? Probably to protect her kids against an intruder. Why did she otherwise “want” to kill him? I’m not sure.
That's why many states will bring a case before a grand jury so they can "no bill" the case by voting not to indict to protect against future malicious prosecution. A reopening of the case would require new evidence.
I’m agreeing with you. I don’t understand what her motive was. And the detectives seem very vague about what they think happened.