Encouraged by the recent reports, I phoned her today at 2 and booked her for an hour starting at 3.30. She texted her postcode promptly - that gave me the impression I was dealing with a professional.
At 3.15 she texted to say she was held up due to traffic, which I took to mean she'd accepted an immediate booking from some-one else.
I replied, "Please text me with full address when you are free." and she texted back "I will xx".
Never heard any more from her, despite waiting around at her post code for longer than pride should have allowed me to.
So - yet another unreliable and time-wasting WG for my blacklist.