Sir Duncan Campbell became fully sensible that the happiness of his new-found daughter depended upon a union with her lover; and unless such were now formed, he saw that Argyle would throw a thousand obstacles in the way of a match in every respect acceptable to himself.
Menteith's private character was so excellent, and such was the rank and consideration due to his fortune and family, that they outbalanced, in Sir Duncan's opinion, the difference in their political opinions.

Nor could he have resolved, perhaps, had his own opinion of the match been less favourable, to decline an opportunity of indulging the new-found child of his hopes.

There was, besides, a feeling of pride which dictated his determination.

To produce the Heiress of Ardenvohr to the world as one who had been educated a poor dependant and musician in the family of Darnlinvarach, had something in it that was humiliating.

To introduce her as the betrothed bride, or wedded wife, of the Earl of Menteith, upon an attachment formed during her obscurity, was a warrant to the world that she had at all times been worthy of the rank to which she was elevated.
It was under the influence of these considerations that Sir Duncan Campbell announced to the lovers his consent that they should be married in the chapel of the Castle, by Montrose's chaplain, and as privately as possible.