Then chase her/the driver down, next time, if you can. Drivers who cut people off/drive dangerously around here are often chased down by their victims, and usually the result is that the reckless driver, at the very least, learns that they can't get away with that sh*t. We are part of the traffic as well, and not letting a driver get away with reckless driving without a little talking to is simply letting problem drivers (and, for the most part, drivers in society as a whole) off the hook. The more drivers become aware that they need to respect cyclists on the road and our rights to the road, eventually there will be greater punishment ftom the law when accidents happen, and hopefully there will be far fewer instances of sh*tty drivers threatening cyclists lives.