As for Giles leaving all his stuff to Faith, well, Buffy has a huge support system. She has a family that will be there for her no matter what.
But does she, really? Willow is at the very least miffed, if not downright pissed off at her for taking away all of the magic. Dawn and Xander are letting her stay with them on what is obviously a temporary basis, and are certainly still friendly toward her, but the "being there for her, no matter what" part, I have my doubts about. We've already seen back in Season 7 that they most certainly were NOT always "there for her, no matter what." Right, wrong, or indifferent, they threw her out of her home.
Buffy's biggest support through the entire series, the one thing that set her apart from all of the other Slayers throughout history, was her friends, but by her own admission, the Scoobies no longer exist. Her Slayer army is disbanded, in hiding, and, as far as we have seen so far, blaming her for all of their misfortunes (am I the only one who wonders if that includes Satsu and a few other of her closest teammates?). Her two fathers, one biological and one figurative, are no longer "there" for her. Angel is basically one step removed from a head of cabbage.nd even if he were back to himself, has way too many of his own troubles to be able to help Buffy with hers. Riley has apparently gone back to Iowa, Sam, and his corn fields. Just who does that leave to be "there for her, no matter what?"
Maybe Faith, since we saw them becoming more friendly during their time together in Tibet, but I'm not certain that she plans to be around very much, what with the London flat, the country property, and, most especially, the horses.
The only one Buffy really, definitely has covering her back, is Spike, and he apparently doesn't patrol with her anymore, at least not that we've seen so far.
From what I can tell from reading Issue #40, it's pretty much just Buffy and Mr Pointy against the world.
Kinda bleak, ain't it?