I mean, Billy is way a hardcore Ravenclaw, no doubt about it. And whenever I do these mental House-sorting games, I *always* use the real traits, as spelled out by the first Sorting song. None of this "Hufflepuffs are useless" or "Slytherins are evil" crap.

But based on Gia as a character? I'm not sure she is actually as ambitious as we were told she was supposed to be. This is always the problem with being told a character is supposed to fit some trait, instead of being *shown*. We were never told Eric was ambitious, we were just shown the fact that he dropped out of high school in order to pursue his goals, that he went out of his way to get what he wanted for himself in life, etc. I'm not sure *which* house Gia would fit best in, but I'm not sure it's Slytherin.