Me too. You are on a main road, in public. MM would have to be seriously desperate to persist in that situation.
I wouldn't. A lot of people would feel really weird about calling 000, I know I do. I did it once, witnessing a serious thing from my window, and even then i was worried i was wasting police time and i had to tell myself over and over that i was allowed to call, thats what 000 is for, etc