YOU SAID:
I found her she makes me happy
INTO JAPANESE
私は彼女が私を幸せにする彼女を見つけた
BACK INTO ENGLISH
I found her to make me happy.
INTO JAPANESE
私は彼女が私を幸せにしてくれるのを見つけた。
BACK INTO ENGLISH
I found her to make me happy.
That didn't even make that much sense in English.