Wait, what? People are taking his side on this based on what's in the video? I can see saying we should wait to hear his side of the story, but seriously, I don't know how anyone could defend him actually stopping and blocking the lane in a manner that no one would be able to predict. If her account is true (big if), then all this second-guessing on whether she should have been able to stop or swerve safely is really nutty.
OP--are you really saying 15 mph speed is excessive in a bike lane? Huh? If I were her, and you told me your opinion of what I should do just in case someone does anything as crazy as what the scooter rider did, I'm pretty sure I'd let you know what I think of your opinion.
I also don't buy that you have a privacy right as to information about whether you rented a scooter.