Many of the previous replies seem to have overlooked that this was an outcall. With outcalls, I do think that you have to be a bit more accepting that the appointment may not be to the dot. A girl may have trouble getting a taxi, the taxi may turn up late, it may get stuck in traffic, she may have trouble finding you, and so on. Agency girls who have their own driver can arrive early and wait in the car until the booked time, but an independent coming in a taxi may be unhappy to wait around in an unfamiliar area if she arrives significantly early. With an outcall, particularly with an independent, I usually allow a reasonable latitude, depending on how far she is travelling, and also that she may well turn up early. However, I do expect reasonable warning.