Dreamt about killing someone in self defense?

I just woke up from a very realistic feeling dream where I had gone to a friends house… I remember we went into the house and upstairs there was a wealthy woman and the house was really nice. Then we went downstairs and that’s where this friend and her mom and sister lived. It was clearly much more run down than the lady upstairs. I don’t remember exactly what happened but the friend suddenly was trying to kill me so I had to reach for this gun and I’d been planning on shooting her shoulder or smt but it went straight to her forehead…. So I ran away and called the police.

Basically after that like there was a huge public outrage at me even though I was trying to defend myself and people kept reminding me of what happened everywhere I went and I was super fucked up about it