Why is "father" in capitalized in the following sentence?
"I think I'll bully Father into getting me one.
"Father" has once been mentioned before in the following:
My father's next door buying my books.
Is "Father" a proper noun here? Why hasn't the author used "my father" instead of "Father" in the first sentence?
More context is here:
"My father's next door buying my books and mother's up the street looking at wands," said the boy. He had a bored, drawling voice. "Then I'm going to drag them off to took at racing brooms. I don't see why first years can't have their own. I think I'll bully Father into getting me one and I'll smuggle it in somehow."