Catherine, at fifteen, tries to balance her relationship with both the Linton children and Heathcliff. This causes difficulties for her since neither side likes the other. She is still Heathcliff’s constant companion, but he has turned into a boorish, uncultivated person. Piqued by the situation, Catherine quarrels with Edgar, but it leads, paradoxically, to closer intimacy between them. Catherine, seeking advice, confides to Nelly that Edgar has asked her to marry him, and she has accepted, even though she is convinced that it is Heathcliff she loves. However, she cannot marry Heathcliff, because of his social situation, and she thinks that marriage to Edgar will secure Heathcliff’s future.
Catherine Linton Heathcliff in the Essays