Sage knows nothing about Mona situation. i dont remembered when she leaves and not understand why. she didnt lose anything what she had at the start of the collage. i mean, she cant know when start, ducking with burke = free tution. as i recall the others say, there was somebody in background, so she probably was intimidated. i wonder how, but it no matter now.
Sage saw, Mona dont have problem, Mona wanted leave, so she left. Maya did a scene when slap Quinn and all hot saw it. it picked up Sage interest. what happening with Maya?
Monas leaving is more forced than Sage being nice to Maya. imo
So i think good written when Sage help Maya and Maya... well... i remember when she want 100% honest and she cant be honest back to mc. it is again like that moment. mc was honest and she was reacting badly. totally her character, not likeable trait, dik move or more like bitch move, but good written character, i find it consistent.