The deed thoroughly answered: a source of domestic altercation was entirely done away, and it was the means of opening Susan's heart to her, and giving her something more to love and be interested in.

Susan shewed that she had delicacy: pleased as she was to be mistress of property which she had been struggling for at least two years, she yet feared that her sister's judgment had been against her, and that a reproof was designed her for having so struggled as to make the purchase necessary for the tranquillity of the house.
Her temper was open.

She acknowledged her fears, blamed herself for having contended so warmly; and from that hour Fanny, understanding the worth of her disposition and perceiving how fully she was inclined to seek her good opinion and refer to her judgment, began to feel again the blessing of affection, and to entertain the hope of being useful to a mind so much in need of help, and so much deserving it.

She gave advice, advice too sound to be resisted by a good understanding, and given so mildly and considerately as not to irritate an imperfect temper, and she had the happiness of observing its good effects not unfrequently.
More was not expected by one who, while seeing all the obligation and expediency of submission and forbearance, saw also with sympathetic acuteness of feeling all that must be hourly grating to a girl like Susan.

Her greatest wonder on the subject soon became--not that Susan should have been provoked into disrespect and impatience against her better knowledge--but that so much better knowledge, so many good notions should have been hers at all; and that, brought up in the midst of negligence and error, she should have formed such proper opinions of what ought to be; she, who had had no cousin Edmund to direct her thoughts or fix her principles.
The intimacy thus begun between them was a material advantage to each.