YOU SAID:
I'm going to walk my pet sister
INTO JAPANESE
私は私のペットの妹を歩くつもりです
BACK INTO ENGLISH
I'm going to walk my pet sister
INTO JAPANESE
妹に会いに
BACK INTO ENGLISH
I'm going to see my sister.
INTO JAPANESE
妹に会いに
BACK INTO ENGLISH
I'm going to see my sister.
That didn't even make that much sense in English.