Melinoë doesn't care who she hurts or what she does to get to her goal. She is driven for success and willing to get it at any means necessary. She is good at fighting, and good at manipulating people into doing what she wants even if she's wrong about it. She is not afraid to speak up and say what's on her mind even if it's mean and hurts others.
Her morals are very questionable and she takes pleasure in others pain and suffering, only ever being nice as an act or because she wants something.
For her, no one is a friend. Only enemies. That's how she was taught to live and how she'll continue living.
Friends are weaknesses and she wants to be the strongest player, so if she gets close to someone or wants to, she'll push them away so she doesn't have to worry about them and they can't get in the way. She is flirty but doesn't want anything serious, too insistent with herself that people getting close to her is not good.
Only really cares about a couple people and three of them are dead.