How does Elinor respond to Colonel Brandon's gift to Edward Ferrars? Is she willing to forego her own love and facilitate Edward's marriage to Lucy? What theme does this characteristic within Elinor prompt?

Marianne still cannot see Willough by for the blackguard that he is; she wants to believe him innocent, though wavers in her convictions. A letter from their mother arrives, and Marianne expresses her desire to be home immediately, though Elinor decides that they will wait for further advice from their mother. Colonel Brandon calls, and Marianne avoids his presence; he has come to speak to Elinor, and tells her of Willoughby's true character.