Bri's little brother Anthony (by only a year, thank you very much!) is a pain in her ass and one of the brattiest people she has ever met, second only to her asshat of a dad and maybe if she’s admitting it just shy of their sister Sierra. Following family legacy of course he ended up sorted into Gryffindor like the rest of the McLaggens (except that one), so she has to deal with him every day of her life. Bri may dislike him on most days, and sometimes attempt to hex him, but in a dysfunctional way they are really close. On rare occasions they both let their guard down and can show people they really do like each other. And Bri would do anything for Ant, just short of maiming someone. She has been known to leave a few black eyes behind her when it comes to him and isn't afraid to speak her mind. Ant is her bratty brother and she's the only one who can fuck with him.
Her little brother Deacon is the one person in her family besides her mother who she can deal with on a daily basis. You could say he’s her favorite sibling. They are both alike in the fact that they are nothing like dear old dad and don’t want anyone to confuse that. He’s another one of those that if you mess with him, you’ll end up either having a lovely Bri talk or meeting her fist. Deacon is unlike Ant in so many ways and Bri loves him all the more for it. Of course Deacon ended up in Gryffindor which is all the better for Bri to have a normal sane family member to talk to.
Little sister Sierra is something else entirely. Having her in Gryffindor and on the Quidditch team with her is a bit of a sore spot for Bri. Sierra is one of the single most bitchy people she has ever met. Like honestly bitchy not Bri’s kind of bitchy. Anyone around the family can tell you that she’s daddy’s favorite, mainly because she’s a Keeper like he was but also because she’s a daddys girl if there ever was one. Her and Bri are almost completely opposite in everything they do. If it wasn’t for the family resemblance and last name, you would be hard pressed to know they were sisters. Even though Bri can’t stand her sometimes, she’d still do anything for her, though it might take her a bit longer than normal.
And then there is Ally. She might only be a little kid but she is star in the making. (That having been said in the ‘A star that’s slowly going supernova and is going to destroy everything in its path.’) There really isn’t much to say as her story is still unfolding and Bri is just along for the ride.