I've thought that too about Quinn being to BaDIK as Ana was to AL, but I also wonder if we might have a few Ana's depending on our choices. For example, if you don't help Quinn (which will probably be something that comes later), aren't with any LIs by the end of the game, but did do several things with Camila, perhaps she will be who the MC ends up with.
Quinn, Camila, and Riona could potentially be "Ana's" as they are the most prominent side girls and the ones he can spend the most amount of time with other than the main LIs.