How would Harry Potter's relationship with McGonagall change if he moves in with her in the fanfiction?

His daily routine would change a great deal. Instead of waking up to the cold and often dreary UK weather, he'd wake up to the warm sun of Hawaii. He might start his days with a swim in the ocean rather than a walk around the Hogwarts grounds.

The discipline would probably change a great deal. McGonagall was known for her strict but fair discipline. Without her, students might start getting away with more mischief. Also, the Gryffindor house would lose its strong guiding figure. The new teacher in charge might not have the same understanding of the Gryffindor values. Academically, her expertise in Transfiguration would be missed. There might be a decline in the quality of Transfiguration teaching.

She becomes more nurturing. Usually, she's known for her strictness at Hogwarts, but when she adopts Harry, she softens up. For instance, she might show more patience when Harry makes mistakes in his magic studies.

Well, perhaps Harry moves in with McGonagall because Hogwarts has been damaged and he has no other place to go. McGonagall could then take on a more motherly role, teaching Harry advanced magic and helping him deal with his PTSD from all the battles.

Hermione's status at Hogwarts might change. She could have more privileges or face different expectations. For example, McGonagall might be more protective of her, which could lead to different interactions with other students and teachers.

In this fanfiction, Hermione would be greatly influenced. She would be eager to explore the Australian magical libraries and discover new spells and potions. Ron might gain a love for Australian food, which could change his physique a bit. The kids would be more open - minded, as they are exposed to a new and diverse magical culture. They might also become more independent, as the Australian wizarding community could have a different parenting style.

When Harry moves to America in fanfic, his social life is completely transformed. He is introduced to a whole new set of magical families and individuals. His status as 'the boy who lived' might not carry the same weight, or it could be even more of a novelty. He might have to learn new spells that are more common in America. His daily routine would be different, from the food he eats to the way he travels around the magical areas. And his view of the wizarding world would expand as he discovers the unique aspects of the American magical society.

McGonagall might notice Harry's distrust and feel hurt or frustrated. She may try to figure out what went wrong but find it difficult as Harry is not forthcoming. Their interactions become less warm and more formal. For example, in class, Harry may be less likely to ask for help from McGonagall, and McGonagall may be more strict with Harry as she doesn't understand his change in attitude.

It completely flips their relationship. In the original story, McGonagall is a respected figure for Harry. But in this fanfiction, the hatred makes their interactions tense and negative.

It would be very strained at first. The Malfoys would see Harry as an intruder and a symbol of what they oppose. But as time goes on, they might start to see his good qualities. Harry, for his part, would always be on guard but might also feel a bit of pity for them as he learns more about their insecurities.