That Baissac is sneaky but does what she believe is right. She is not afraid to be brave, and do what most other's wouldn't
I think the reader can most likely conclude that the speaker: Recognizes and respects her grandmother's social position
During her bath, the narrator slowly understands her Grandmother position as she grew older. If we pay attention to our society, we will see that the elderly keep losing power as they got older. They used to be listened by their children but after a certain age, the position is reserved. The children took more power over their old parents.
Because his father has been ordered to relocate on the orders of the Fury (the Fuhrer, Adolph Hitler). Essentially, Bruno's father has been promoted to a Commandant position at Auschwitz, and this is why the family has to leave their house in Berlin.
Dragged, because 'heave' is a word meaning to tug, or pull. :)