Dunno, only Quinn has it worse than Maya among the girls and while the past hardened Quinn, Maya wasn't that strong. She is desperate and that's why she became easily manipulated so I forgave her for the shock treatment.
Also I didn't mind her outburst about her family as it was her first completely honest moment with the mc where she didn't run away to avoid an unpleasant situation.
Maya needs someone like Josy and the mc (or both) in her life, because left alone she would just sit in her room moping about her complicated life.
Sage and Josy are my favorites, and I really like Maya, but I agree, she isn't there yet as she needs time to find herself and decide what the hell she wants. True when Josy and Maya are together they really make it hard to pick one between them and Sage.