I was about 20mins late for a booking with Alexandra stuck in traffic and trying to find somewhere to park. I did, though, warn her in advance and she was cool with it and just offered me a 40mins booking instead of 1hr when I eventually arrived.
I was driving and obviously phone comms go down in the tube, so one can't let WGs know.
It sounds like she could have at least offered OP a shorter booking.
Re the name thing, she has called herself Ola, at least in person, according to previous reviews.