ok but she has 18!!! why is she acting stil like a 5 years old __??? she reincarnated for ...

Mental damage is a thing, that stuff messes up our brain

Can you say the same when you’re confined more than ten years and only to be abused? I don’t think so.

She grow up lock away from others. Maybe she don't develop the social skills and knowledge necessary according to her age.
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Yea, you learn from others but she has nobody to learn from so she wouldnt know what actions her age group would do. ;-;