The Struggle by L J Smith

Damon tells Elena that he wants to make her his queen of darkness and that by the first snowfall she would be his. Elena doesn't want to worry Stefan so she doesn't tell him about all her encounters with Damon. Meanwhile, Caroline steals Elena's diary and tries to expose Stefan as a murderer to the town. Elena can't seem to get her diary back from Caroline, but she knows the consequences would be awful for Stefan if she doesn't.