Sacrifices...

Elizabeth and Jessica Wakefield's parents have seperated. Mr. Wakefield has moved into an apartment of his own, and the house seems to be empty without him. Elizabeth has never been miserable. She would do anything to bring her family together again.
Then, Jessica tells her twin that she thinks their parents' seperation is all Elizabeth's fault! Distraught and guilt-ridden, Elizabeth decides to move away from home. If she really is the cause of her parents' unhappiness, perhaps they'll get together once she is out of their way...

Enid put her arms around Elizabeth. "Hey," she said softly, "don't torture yourself. It isn't your fault that your parents are seperating. Will you trust me on this one? However terrible the things you may have done seem to you right now, they aren't the cause," Enid insisted.
Elizabeth sighed. Enid just didn't understand. "I guess you're right," she muttered.
"I know I'm right," Enid said confidently. "There's no way their seperation was your fault. You have to stop thinking like that."
Elizabeth nodded glumly. Of course Enid would say those things - that was what best friends were for. But deep down, Elizabeth knew she was at least partly to blame for her parents' seperation, and nohing was going to convince her otherwise.

Will Mr. Wakefield really be elected mayor of Sweet Valley? The Parent Plot