YOU SAID:

I am the most mentally unstable brown haired young woman who has good grades.

INTO JAPANESE

私は最も精神的に不安定な、成績の良い茶髪の若い女性です。

BACK INTO ENGLISH

I am the most mentally unstable, high-achieving brown-haired young woman.

INTO JAPANESE

私は最も精神的に不安定で、成績優秀な茶髪の若い女性です。

BACK INTO ENGLISH

I am the most mentally unstable, high-achieving brown-haired young woman.