When she was broken, she didn't understand what she was doing. There was something childlike about her, which made her brutal games more difficult to swallow. As she gained pieces she changed, although the common bloody, mentally tormenting results of her games didn't. Those that hated her the most are the ones who have some imbalance in themselves that they hate, that they hate to face - that's the nature of a mirror.
She's self-defeating. She doesn't understand the friendship and loneliness that plagues her, but she understands pleasure from sadism. I used to think she was like the Noah from my world, a person with another crueler side that slowly overwhelms her, but now... I think she is more like an Akuma. A created being, broken and tragic, who can't escape her function in the world, seeks to be whole, and destroys what's around her, all while showing the shades of someone who could be okay, if conditions were perfect-- if everyone she's ever made a victim forgave her.
I'm asking because I wanted to hear-- because you aren't idiots, because you see a side of her we are never shown, yet are friends with everyone she shatters. I thought there was something you could know, something you'd seen that could change my mind. I've always known she had that potential in her. Yet she isn't willing to let go of the part of her that wants others to suffer, that loves to break others. And while she's lived with you, that's been consistent.