Also one more thing, before I go to bed, what does she mean when she says this?
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And why is she looking away, when you ask, she immediately changes the subject.
It's not confirmed what Sage is referring with this, but I think it's simply to make the player understand that her character is more complex than what we might initially think. And she looks away because what she is saying means something to her, her beliefs let's call it, and it's a moment of vulnerability for her. Then she puts her guard up once again and changes the topic as if nothing has happened.
I also think it could be a metaphor to Sage and MC's relation, at least on her side. She didn't see MC as a potential SO until later, when she changes her perspective on him. From that moment on, she starts to see him as someone she wants to keep close, be it as friend or something more.