What is Elie's family like in Night? To whom in his family does he seem most attached? With whom would he like to be closer?

Eliezer is a 12-year-old boy at the start of the story.  He lives in Sighet with his family. He is the only son; he has three sisters, two older (Hilda and Bea) and one younger (Tzipora).  At the start of the story, Eliezer speaks of his closeness with his mother.  On the contrary, while he respects his shopkeeper father, Eliezer's father often focuses his time and energy on others within the community as opposed to his own nuclear family.

This changes upon the family's arrival at the concentration camp.  Immediately, the women are separated from the men, and Elie is left alone with his father.  From that point on, Elie (who had wanted to be closer to his father) gets his chance to become close to his dad.  The two lean heavily on each other for support during their time at Auschwitz.