It'll be interesting to hear final details. I wouldn't be surprised if the police were beyond her field of view and she just heard someone yelling at her. Of course coming out of your house with gun in hand is rarely a good idea.
BTW, wife and I were in the city (Houston) to see 3 Irish tenors several years ago. At the bar before the show our regular bartender asked if we were there to see Weezer. Since we're both dressed well, it seemed like an odd conclusion on his part but they were playing the arena directly behind the bar. Halfway through the 3 tenors, I was asleep. Wife asked if we should go and I replied yes... but. She said, you want to see Weezer don't you

I said YES! We bought tickets, sat down 5 minutes before they hit the stage and saw a great show! She feel asleep halfway through the show and still refers to it as the time we saw Weasel