YOU SAID:
Hello, mother you are pretty!
INTO JAPANESE
こんにちは、お母さん、あなたはきれいです!
BACK INTO ENGLISH
Hello mom, you are beautiful!
INTO JAPANESE
こんにちはお母さん、あなたは美しいです!
BACK INTO ENGLISH
Hello mom, you are beautiful!
That didn't even make that much sense in English.