(long but it happened while I was marathoning the movies)
-One of the Weasley twins (George) is a squib (weâll get to why thatâs important), as is Petunia Dursley (nee Evans).
-Hogwarts allows non-magical/squib siblings into the school if their brother or sister is a witch or wizard. They can take classes like herbology and care of magical creatures, but otherwise they learn muggle subjects such as home economics, math, science, etc.Â
-Squibs have a club where they try to practice magic even though they know they wonât be able to do it anyway.Â
-Petunia always tries her hardest to cast spells but isnt successful because she wants to be like her little sister. She always has an appreciation for magic and respects her little sister despite feeling a bit jealous of Lilyâs abilities. Petunia keeps trying to practice magic despite how Vernon feels about it, and again, she isnât successful.Â
-After Lily dies, Harry is sent to live with the Dursleyâs. Vernon is still an asshole, but Petunia loves Harry like her own son. She doesnt always show it in front of Vernon because she doesnât want Vernon taking out that anger on her or Dudley or for Harry to experience any more abuse, but she does. Even though Vernon forces Harry to live under the stairs, every night after Vernon is asleep, Petunia sneaks downstairs and carries Harry out to the couch so he can sleep comfortably for the night. Whenever Harry has a nightmare as a child, Petunia makes sure she can be there to comfort him and that he always feels safe coming to her when heâs scared.Â
-Dudley still picks on Harry a lot, but he thinks of him as a brother and will stick up for him when he gets picked on or is in a fightÂ
-Harry grows up loved and cared for both by Petunia/Dudley, as well as the Weasleyâs. Heâs got a huge family that all care about him deeply (except Vernon)
-Petunia seeing how much Vernonâs abuse has affected Harry and allowing him to go live with the Weasleyâs just to protect him, even though she will miss him and his spirit when heâs gone. Harry (same as in the books) considers the Weasleyâs to be his family but still goes to visit the Dursleyâs every chance he gets.Â
-By the time the Battle of Hogwarts rolls around, Petunia is so concerned for Harryâs safety that she goes to the school to try and help however she can. She arrives just in time and helps out with different things around Hogwarts as the magical community fights.Â
-Petuniaâs only successful spell comes when she blocks a killing curse meant for George because she knows he cant defend himself. She knew the loss of George would absolutely devastate Harry, and she doesnât want him to lose a brother. She doesnât know at this point that Fred has been killed, but she knows she has to protect the family that has helped raise Harry.Â
-Georgeâs only successful spell comes with killing Yaxley, thereby saving a younger student who wanted to fight.Â