How we cite our quotes: Chapter.Paragraph or Chapter.Section.Paragraph (depends on whether or not the chapter had sections - some did not)
Quote #4
Mrs. Weasley kissed all her children, then Hermione, and finally, Harry. He was embarrassed, but really quite pleased, when she gave him an extra hug.
"Do take care, won't you, Harry?" she said as she straightened up, her eyes oddly bright. Then she opened her enormous handbag and said "I've made you all sandwiches [...] Here you are, Ron [...] no, they're not corned beef [...] Fred? Where's Fred? Here you are, dear [...]" (5.24-5)
Mrs. Weasley is definitely the mother figure of the book, and is really the sort of mom everyone wants – loving, considerate, and strict (hey, it's a good thing sometimes).
Quote #5
Percy Weasley (acting, Harry suspected, on his mother's orders) was tailing him everywhere like an extremely pompous guard dog. (9.2.5)
Percy shouldn't pursue a career as a spy. Details like this really emphasize how Harry is basically a part of the Weasley clan now. And they look out for their own.
Quote #6
Everyone said the Dementors were horrible, but no one else collapsed every time they were near one. No one else heard echoes in their head of their dying parents. (10.1.4)
Harry's status as an orphan is central to his character. Others define him as such, and Harry, interestingly enough, is fixated on his parents death himself. This has a lot to do with how they died, of course, and it's also worth remembering that Harry only learned how they died two years prior, in Book 1. He hasn't had much time to come to terms with that yet.