It seemed, at any rate, to be imperative that he should either do that or not marry at all.

Poor Beatrice was not very mercenary in her views: she had no wish to sacrifice her brother to any Miss Dunstable; but yet she felt, as they all felt--Mary Thorne included--that such a match as that, of the young heir with the doctor's niece, was not to be thought of;--not to be spoken of as a thing that was in any way possible.

Therefore, Beatrice, though she was Mary's great friend, though she was her brother's favourite sister, could give Frank no encouragement.

Poor Frank! circumstances had made but one bride possible to him: he must marry money.
His mother said nothing to him on the subject: when she learnt that the affair with Miss Dunstable was not to come off, she merely remarked that it would perhaps be best for him to return to Cambridge as soon as possible.

Had she spoken her mind out, she would probably have also advised him to remain there as long as possible.