Okay, so I've got this character whose arc is about her learning to deal with ostrasization and loss. It starts when the other characters learn that this girl, M, is dangerous. Basically, when her emotions run high, she loses control of herself and starts acting on one single thought (run away, protect, kill, hide, etc.). This isn't unique to her, and the characters eventually learn what causes it. But, to the point, this happens when she's face-to-face with the main antagonist and, instead of running away, she fights, which causes another mc to help and then get killed. She then ostracizes herself from the mc crew. Two years later, another mc is going to be executed, she tries to get the others to help, but they can't abandon their individual goals. Undeterred, she goes to save her friend, reasoning that, once they team up, they could easily escape. She successfully infiltrates the execution, only to not have the other mc help, accepting death. This directly causes M to get seriously wounded and almost killed. They both manage to escape after the friend finally gets her act together, but M sees this as a huge betrayal, and runs away from the friend as well as the other mcs, as none of them would help her. Later, the mc crew goes to save M when her life is in danger again. She can't accept this, however, because everytime she feels the pain from that serious wound, it reminds her of the betrayal. Fast-forward to the end of the book and, despite M coming back to help the mc crew defeat the main antagonist, she still can't forgive the mc crew. She walks away from them one last time, and that's where her arc ends. M's arc is, at first, about the world around her shunning her because she's dangerous, then it transitions into her ostracizing herself from her friends because she just can't forgive them. She spends the story trying to escape from her isolation and loneliness, but never realising that she could solve her problem at any time by just going back to her friends. The big decision to end her arc comes after the final battle, where she chooses to either walk away or join the others and celebrate. She walks away, not realising that she's actively rejecting the solution to her problem. My question: Is this an acceptable ending? I mean, it's a huge decision that has buildup starting at the ending of the second act, but she chooses to continue her isolation because she just doesn't understand that her feelings of anger and betrayal aren't absolute, and that they can be worked through. Will readers consider this to be a bad resolution (I mean, like, an objectively terrible writing decision)? I think it fits and that it's the logical conclusion to her arc, so I go with it to faithfully follow the logic of the character, or should I change it for a more satisfying conclusion?