Frustrating, for sure.
See how she handles it and see what happened, and then consider seeing someone else. Unless there was a significant issue why she missed the appointment, then you need to find someone you can trust.
If you're in NYC, I know a good one to recommend.
If you need to talk to someone right now, you can PM me and I can talk on the phone from now until about 5:30 today. I'm not a T, but I can listen.
"There is a Catskill eagle in some souls that can alike dive down into the blackest gorges, and soar out of them again and become invisible in the sunny spaces... even in his lowest swoop the mountain eagle is still higher than other birds upon the plain, even though they soar." -- from Moby-Dick