I mean, yeah, Andrea was always the main character, since she's the one the story followed after Olivia temperarely died, but then also, wasn't there a black room section where Andrea passsed out and Olivia was the only up and awake one for a good while of time? Hold up, didn't that then go on to a flashback of Andrea and Olivia arranging a prom visit, which only Olivia saw? How da heck did that work, if Olivia's just an imaginary freind?