I don't know why everyone puts Sage so high, she's the biggest mess in the game and the mc will never be able to talk to another woman again without Sage asking him a thousand questions about them, probably safest with Jill as a partner, she doesn't really have a problem, except for her sister's death, which I feel she has come to terms with and just wants to do something in her memory to help others.
1. Sage has got it all. The main girl for DIK path becoming Neutral or CHICK. A love declaration, Thanksgiving with Neil, previously with Others, sees themselves progressively as boyfriend/girlfriend, and she's even into martial arts and guitar -- MC's two hobbies that he even teaches her. Sage is the
real Other's Queen, but 2nd only to Quinn being the OQ, though bisexual, she might just go monogamous. Only snag would be the Jade complication. Potential for marriage and children, based on choice.
Potential Future Scene: 1-3 (only lower to accommodate everyone else)
She's also involved in the main plot at times, and has some of the most emotional scenes in the game (relationship with Chad that you help and save her from, reveal of the Burkes, fight with the Burkes, wanting a family, wanting to know her birth family, etc.) She's the only one who actually asks the MC for his future plans, with her next to him, with the option for kids or not -- and she just accepts whatever you choose.
There's no indication Sage will ask the MC for a thousand questions. She actively likes threesomes.