I'm not randomly contrasting them, either: think about this before we move on. Blair's mother Eleanor had a husband, and they loved each other very much, and they had an understanding. And Blair didn't even think about letting her dad's secrets get in the way of her very fierce love for him. The thing that killed her was being abandoned by him, and Eleanor did everything she possibly could to connect herself to that abandonment and shame, because she thought being the remaining parent would help her win B's affection, but all it did was make Eleanor seem like a monster. (Which she kind of is, but still.) When her dad's stuff went public, he went to France. When her stuff went public, and her storied chastity went out the window, her first thought was to follow. Her shame was, in that moment, at least partially connected to his: when you're a Waldorf, you hop on a fucking flight, and wait until the fever breaks.
But she never saw her father's life as shameful: just annoying, that the world's inefficiency and weirdness about sexuality was getting in the way of her love of her father, and his for her. And her response, as a bulimic and as a teenage girl, was to attack the entire world for doing that, for not living up to her standards. It's part of the reason she needed Serena so much, that year. Therefore: homophobia and gay scandal ruined Blair's life, and by Blair logic it was her mother's weakness that was the trigger. And the ambiguous part -- which is always going to be the thing that gets under Blair's skin, because she lives by incredibly strict rules -- is that she loves her mother anyway. This story isn't about Georgina Sparks, and while it's about Eric and Lily mainly, never forget that this week is a story about Blair: how she heals her past by correcting the present, and thus continues to heal herself. With brute force, because that's all she's got.