Sorry OP, that's poor form.
But I must say out of character - I have seen her a few times and she's always messaged if she's had to cancel, postpone or delay.
Was it booked/confirmed same day?
I always ask and then wait for confirmation comms from the SP on the day of the meet when I've booked it in advance on an earlier day. If I don't get a reply from her before I need to set off on the day, I don't go.