I had a slightly different take on this - if she had said “OK thanks guys, I feel a lot better now. See you later.” it probably all wouldn’t have ended in murder.
What I can’t understand is why they entered the house after that interaction and the video I saw didn’t show.
After that it all went downhill aggressively. The tone of her “Jesus retribution” comment was actually very soft. The cop putting his hand on his gun and his incredibly aggressive tone was mental. Pure escalation with someone who obviously has mental health issues. She was never going to get out alive. :( It reminded me of that awful video of the young lad on the hotel floor who was executed. Very upsetting to watch.