Having no desire to leave me too abruptly, she would remain the next day (which was Sunday); and would take her departure on Monday morning.

Such was her explanation, in so many words.
Remonstrance, as I knew by experience, would be thrown away.

Authority I had none to exert.

My one sensible course to take in this emergency was to find out which way my own interests pointed, and to go that way without a moment's unnecessary hesitation.
A very little reflection has since convinced me that she has a deep-laid scheme against Michael Vanstone in view.

She is young, handsome, clever, and unscrupulous; she has made money to live on, and has time at her disposal to find out the weak side of an old man; and she is going to attack Mr.Michael Vanstone unawares with the legitimate weapons of her sex.