YOU SAID:

how do you know whats good for me.

INTO JAPANESE

どのように私のために良いことを知っていますか？

BACK INTO ENGLISH

How do you know about good things for me?

INTO JAPANESE

私のために良いことをどうやって知っていますか？

BACK INTO ENGLISH

How do I know to be good for me?

INTO JAPANESE

私のためによいか。

BACK INTO ENGLISH

Good for me?

INTO JAPANESE

良いわよ

BACK INTO ENGLISH

- Good.

INTO JAPANESE

- そうこなくちゃ

BACK INTO ENGLISH

- Good.