YOU SAID:

I cannot like her as needed.

INTO JAPANESE

私は必要に応じて彼女を好きになれません。

BACK INTO ENGLISH

I don't like her as much as I should.

INTO JAPANESE

私は彼女が必要以上に好きではありません。

BACK INTO ENGLISH

I don't like her more than I should.

INTO JAPANESE

私は必要以上に彼女が好きではありません。

BACK INTO ENGLISH

I don't like her more than I should.