And a girl, if hit, would be unable to see that this tutor, judged as a man, was to some extent despicable for accepting tutorships, and, one might say, dishonouring the family of a soldier of rank and distinction, by coming into houses at the back way, with footing enough to air his graces when once established there.

He ought to have knocked at every door in the kingdom for help, rather than accept tutorships, and disturb households (or providently-minded mistresses of them) with all sorts of probably groundless apprehensions, founded naturally enough on the good looks he intrudes.
This tutor committed the offence next day of showing he had a firm and easy seat in the saddle, which increased Lady Charlotte's liking for him and irritated her watchful forecasts.

She rode with the young man after lunch, "to show him the country," and gave him a taste of what he took for her variable moods.

He misjudged her.

Like a swimmer going through warm and cold springs of certain lake waters, he thought her a capricious ladyship, dangerous for intimacy, alluring to the deeps and gripping with cramps.
She pushed him to defend his choice of the tutor's profession.
"Think you understand boys ?" she caught up his words; "you can't.