She was so much younger than her brother Fitzwilliam Darcy that he became a father figure in her life, rather than a brother. When Georgiana was only fifteen, Mr. Wickham tried to convince her of his love in order to get her dowry. She had known him all her life, so she did have an affection for him, and she convinced herself that he did love her. They planned to run away in order to elope. When Mr. Darcy unexpectedly showed up and she confessed their plan and Mr. Darcy stopped them. 