There was something so eminently sober and clear-headed about him, his common sense and soundness of vision were so unvarying, that without him Tuppence felt much like a rudderless ship.
Tuppence relied on him heavily, and when he left abruptly, she felt abandoned.
mnli hypothesis: Tuppence relied on him heavily, and when he left abruptly, she felt abandoned. premise: There was something so eminently sober and clear-headed about him, his common sense and soundness of vision were so unvarying, that without him Tuppence felt much like a rudderless ship.