The closest thing Blade's going to get for permanent housing is a tent or heavy duty cardboard box. I think the old folk's home was government-assisted in some way and they fucked it up, so probably no more government housing in WA for the foreseeable future. She'll die homeless: her death certificate will have her address listed as "indigent" or as whatever the closest roach motel is.
Something else Blade probably hasn't even thought of, when Peggy dies, how is Brian going to bury/cremate her, and still make it to Vegas? Burial/cremation isn't cheap and I doubt Blade's sibling(s) will help pay for it. Besides, moving (especially between states) is fucking expensive. I guess he'll "figguritout." Even if he makes it to Vegas, he's going to be living in the tunnels this time next year.