Spanish and English, an address in the centre, and a preference for the evening on which neither of you is due anywhere at seven.

A client week has a shape to it: three tight days, then a Thursday that loosens. She is usually asked for the loose one. Twenty-five, and she takes the same care over an evening agreed a fortnight ahead as over one settled that afternoon. Living centrally keeps the crossing short, which matters on the day a meeting overruns and the hour has to move by half of one. Ask for a therapist each and the evening runs at 720 euros an hour with two sessions side by side, which is what couples choose when the night itself is short.

Celia decides which bookings she takes and may decline any of them; she sets the limits for what a session includes, says what they are, and may end a visit at any point, as the terms set out.