He seemed rather eager, in a bewildered sort of way.

He turned his candid gaze inquisitively to Mr Verloc's heavy countenance at frequent intervals, especially when his sister was not looking at him.
His expression was proud, apprehensive, and concentrated, like that of a small child entrusted for the first time with a box of matches and the permission to strike a light.

But Mrs Verloc, gratified by her brother's docility, recommended him not to dirty his clothes unduly in the country.
At this Stevie gave his sister, guardian and protector a look, which for the first time in his life seemed to lack the quality of perfect childlike trustfulness.

It was haughtily gloomy.

Mrs Verloc smiled.
"Goodness me! You needn't be offended.