YOU SAID:

My mother is my child and I'm my mums mother

INTO JAPANESE

私の母は私の子供で、私は私の母の母です

BACK INTO ENGLISH

my mother is my child and i am my mother's mother

INTO JAPANESE

私の母は私の子供で、私は私の母の母です

BACK INTO ENGLISH

my mother is my child and i am my mother's mother