i feel bad for aria, because she's showing a little bit of likeness to oscar, and now she's being thrown away. she never really had anyone on her side before, aside from her mother and (soon) the crown prince, so, of course, it doesn't matter if oscar is useless or what but she provides comfort for aria, even her prior interest to him is just use him for revenge against mielle.
oh, and mielle, darling, that's not going to be your everyday scenery and i don't feel bad, even just a little bit, about your future.