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.
But he grew old, this knight so bold / And upon his heart a shadow / Fell as he found no spot on the ground / That looked like El Dorado.