There must be no chance of anyone entering that room." The gravity of his manner impressed them, and Tuppence felt less ashamed of her attack of "nerves."
Tuppence was even more ashamed.
mnli hypothesis: Tuppence was even more ashamed. premise: There must be no chance of anyone entering that room." The gravity of his manner impressed them, and Tuppence felt less ashamed of her attack of "nerves."