Atdtda23: [44.3i] A glazed look in her eyes even at this distance, 640

[Paul Nightingale]

[640.3-4] As it turned out, she showed a propensity, strange in such an
eye-catching young lady, for disappearing ...

Cf. Yashmeen's departure from Kit's room on 592:

Actually, it was not even a door to begin with, but something designed to
allow the human brain to interpret it as a door, because it served a similar
function.