Winston realizes that even though he was mean to his mother and sister
that his mother loved him no matter what kind of child he was. His
mother sacrificed a lot of things for Winston. She gave him most of
the food when Winston's sister and mother practically starved.
Winston's mother let him do whatever he wanted to. Yet even though
Winston grabbed the chocolate out of his dying sisters hand, and ran
away he remembered the look of longing from his mother and his sister.
He remembered the love that his mother felt for his sister. He
remembered the look in her eye that told him that she loved him no
matter what, but he could tell that she was disappointed in him. He
remembered the loyalty that his mother gave him by loving him no
matter how evil he acted towards his sister, and no matter how many
times his mother and his sister starved his mother always gave Winston
the biggest portion of food. She loved him unconditionally and I think
Winston ended up being disappointed in himself, because he realized
from his dream that he really was horrible to his family. That is why
he always thought it was his fault his mother died.