Silver doesn't need another father. He's already got one of those, technically, but the man turned out to be a weak, cowardly bastard who couldn't face his own problems let alone raise a child. The way he sees it, there's no need to set himself for more disappointment. He's got a roof over his head and food to eat, and that's far more than he could ever depend on in the last... however many years he'd been living on the streets. Lance and Clair are annoying as hell, but while he's training in the Dragon Den, he doesn't exactly have much room to complain. Not out loud, anyways.
Lance doesn't particularly want to be a dad either. He's already got too much responsibility on his plate as Champion, and this kid clearly needs so much more emotional support than he feels like he can provide. Simply convincing him to move into his guest room was enough of a struggle, and it only really worked because Lance had promised Silver he could "earn" his keep. What the hell is up with that, anyways? He's not sure what Silver's past looks like, and he's not about to go prying, but the bare minimum he can do is make sure he doesn't have to rough it out in the woods anymore. At least Clair seems to be having fun training him...
Clair is more than ready to be an aunt. The other two refuse to admit to caring for each other, but unlike them, she's not afraid of something as stupid as her emotions. The brat's slowly but surely been mellowing out during his training, and her idiot cousin has actually been taking care of himself for once in order to be a "good example." Silver has even caught on to calling Lance "old man" like she does, on account of those ugly-ass reading glasses the all-mighty Champion has to wear, and she couldn't be prouder. Best part is, she doesn't have to spend a dime except to treat the kid every so often! That's a win in her book if ever there was one.