Maybe this is a common occurance in "her neighborhood"?
I can tell you this. When I went to rookie school at the Fort Worth Fire Department. We rode out of station 5 which covers an area just north and east of where she lived. We were instructed prior to riding out that we would be in a world we were not familiar with. The instructors said you will hear gunshots. Watch yourself but do not be concerned with it unless everyone else takes off running. They live in the hood and are aware with what is going on. Around 0300 one morning, we were working a DWI accident. I heard a full mag go through a AK47 (rock and roll) and none of the 50 or so spectators even batted an eye.