The first time round, she hated the father, mistress and adopted brother, because she couldn't accept the fact that her father had callously brought his mistress home so quickly after her mother's death. After her death, she continued to watch on as the family lived their lives without her, and found that maybe they had actually cared for her, especially the adopted brother.
The second time round, she was able to let go of a little bit of that hatred, and lived for herself instead of just for revenge. The ML wore her down, continuing to pursue her. But how did he even manage to get past her trauma of relationships? (I'm pretty sure she's traumatized by the wreck of a marriage between her biological parents). Somehow the ML was able to wear down her defenses, and there's a happy ending. But somehow that's not enough for me. Where did all the hatred and pent up feelings go? It doesn't feel like it could have all been expressed by just one sentence asking her father why he hated her. I had hoped for more of a breakdown/shouting match between her and her father, allowing her to release and vent those negative feelings.
Sure, the MC has 4 secret skills, one allows him to 'analyse' other people's status. The tutor he happens to pick up has 2 suspicious titles, plainly said that everyone else ran away, and blatantly threatened to kill him unless he acknowledged her as a teacher. That's already suspicious as hell.
Its understandable, since he's still not strong enough to get away from her. But he should have at least taken precautions against threats to his family. But then everything seems to be fine and dandy, and this tutor just decides to stay around civilization when there's a crescent moon? It's a re-occurring event, and this teacher didn't even try to not kill the people around her? She goes crazy, kills and eats MC's father, cuts off his Mother's arms, and was only finally put down by the dragon that exists in the MC's dragonewt form.
After all this, the MC pays more attention to talking and finding out more about it than worrying about his mother's arms. Really?! After all this, there's no feeling of guilt or sorrow whatsoever about his dad dying.