Does that help some?Could you please explain or give a link to a general rule of article usage with members of the family . Here are 2 examples :
At 8 o'clock father puts on his coat and goes to work . The writer is talking about his/her father.
The writer could have said 'At 8 o'clock my father puts......'
The mother asks the boy to help her. It's not the writer's mother; it may or not be the boy's mother.
It's an unidentified but specific mother that the writer is talking about.