I contacted this lady earlier in the week, asking to make an appointment on Sunday. The date and time was agreed, and specific details of the meet were discussed - so far so good.
Sod's law - the following day I got some bad news that meant I could no longer keep the appointment. I sent Kat a message on AW to let her know something had come up, and very apologetically told her I'd need to cancel, but would be back in touch at a later date to reschedule. The message appeared as having been read, but I received no response from Kat.
So today I sent another message just to check that she'd definitely seen the cancellation notice - message showed up as having been immediately deleted. Looks like she's got me blocked, probably assuming I get my kicks wasting people's time.
One strike and you're out it seems, with this lady. Somewhat harsh?