Why should the MC care, if he´s not romantically involved with none of them? If he is in Jill or Bella´s path, for example? You can say "it´s just going to a meeting", but it´s not. It´s to be dragged into the drama of a couple of lesbians that broke his heart, and a girl that was the cause of the MC being physically assaulted.
Actually, I don´t buy either Sage being so involved in helping Maya (a girl that she barely knows) with a lot of money, specially since for her it´s not just "daddy, give me a few thousands of dollars, pretty please", but a lot of trouble and concerns. That storyline should be Jill´s. It makes more sense with the character. She´s the saint from the beginning of the game, always eager to help people bullied by others, not Sage, and knows Maya via Josy and could know about their problems the same way Sage did. But the writer needs the drama, even if it´s far fetched.
For Sage, it´s not character development, is almost a 180º turn in her personality. I like Sage, but let´s face it: her first move was a dick one. She´s not a good person at first. A guy that she doesn´t know try to defend her from her aggressive boyfriend, and she thinks "great this guy is naïve enough. I can manipulate or blackmail him to spy my boyfriend, even if it´s dangerous for him because my boyfriend and his pals are cavemen..." A girl that thinks that way doesn´t became a saint in a few weeks. She would need way more character development, with the help of the MC. There are a lot of HOTs with bigger problems than Maya, but are not so drama queens and not put them on a show. There are girls in her sorority prostituting themselves, for god´s sake! They need the help and money more than Maya. Those good feelings of Sage should have been reserved by the writer for helping Quinn, Rionna and the other HOTs when those problems come to light later in the story. Girls that Sage knows for more than a few days.