YOU SAID:

I trust that you will take good care of her

INTO JAPANESE

私はあなたが彼女を大事にすることを信じます

BACK INTO ENGLISH

I believe you take good care of her

INTO JAPANESE

私はあなたが彼女を大事にしていると思います

BACK INTO ENGLISH

I think you take good care of her

INTO JAPANESE

あなたは彼女を大事にしていると思います

BACK INTO ENGLISH

I think you take good care of her