Again: all those things are additive. They add things to her character. She's not just a human scientist, she's a mutant who has lived ten lives.

"And she didn't only have Proteus as a genetics experiment that she lorded over him?"

I mean, when she lorded it over him during the Hellfire Gala, she was quite clearly lying to him in order to provoke him. She had him as an experiment, yes, but it's pretty clear from prior stories, she also had feelings for him. She also locked him in a cage since he was a child, which is, you know, a pretty fucked up thing to do.

"And she only met and got together with Charles so she could try and break his ideals instead of genuinely falling in love with him? "

I mean, she did fall in love with him. That's a thing that happened during one of her lives. She literally says that she's loved him and hated him for many years.