Thumb Dynasty has been a real breath of fresh air, badly needed in the fetid stagnance that is Amber's would-be life. I can't believe Becky is actually pretty "together" compared to other members of her family. She might be depressed, obese, tied down to a manipulative beluga, and mentally (and intellectually) arrested at age 14, but maybe the white trash petri dish she grew out of does something to explain it, if not excuse it. As others have pointed out, whatever else she is, she's not a redneck broodmare, a welfare queen, or wife to a paedophile. She's even, and say this in a strictly relative sense, somewhat good-looking compared to the other melons on the Williams vine.
What's tragicomic is that Amber would, and probably does, still envy Becky her family, for their pseudo-Southern mystique and the fact that they stuck together despite ludicrous dysfunction. The Reids are meth-head trailer trash of the first degree, and they don't even have a kooky accent to show for it. Becky is obviously a deeply dysfunctional gorl, but it's plain to everybody - even none-too-bright Amber - that she was afforded a more stable and loving upbringing than was Amber. There's something in that compulsive clanhood that the Appalachians inherited from the Scottish highlands. God, I can't believe I'm almost feeling bad for BECKY. Nothing has forced her to be a morally reprehensible parasite, though.
I have to say, the wonky jaws and general classiness of the two houses (both alike in big-nity) of our star-cross'd roommates make me wonder if there's some shared DNA. Maybe Becky will have to contest Amber for her heirdom to King Edward III's throne?