Rules of the Road

On my way to the bus stop in the morning, I have to cross the street, which I do at a stop sign. This morning, a driver coming through the intersection gave me a nasty look and mouthed something at me, as if I had done something wrong. I had nearly completely crossed the street by the time her car reached me, and the driver had come all the way through the intersection, so it's not like I suddenly stepped off the curb and in front of her. I think periodically people should need to take a refresher driving course, because apparently this woman didn't understand what the crosswalk was for or know that I have the right of way as a pedestrian.