Well, the seemingly not that bad girl did kill her mother in the previous timeline and would have killed her as well if not for the regression. I think that Aria's hatred of and actions against Mielle have always been reasonable in that light. And in this timeline Mielle has proven multiple times that she's a trifling, insecure child who who will always put herself first (even when she could have saved her beloved Emma she chose not to)
I was giving her character a chance for redemption (I regret that now) cuz her maid got offed already and I thought it's mostly the maid's corruption that led her to being a manipulative trash but alas, it's her nature all along!
Girl is fcking deranged. Pushing and potentially killing your own father just to get back at someone, yeah she's full on evil now. I've always been apprehensive about MC's plan to utterly destroy a seemingly not-that-bad girl but I'm so fcking onboard now. Go fcking obliterate that trash (╬￣皿￣)凸