It really didn't sound like she did anything like "pulling in front of the car," since the car wasn't that close behind. Rather, the car may have had to slow some to wait for the slower vehicle - the bicycle - until it was safe to pass it.
Stopping in a roadway is a hazardous choice of its own; I often have to remind myself (and other riders) that if we're going to stop, we need to move off the road. If the car had been closer (or I wasn't sure I could pull out into the lane safely), I'd have stopped, indeed - especially if I were dealing with one of those alien shuttles... you just never know waht those Martians will do...