YOU SAID:
I went to the store for a cookie with my mom
INTO JAPANESE
私はお母さんと一緒にクッキーのお店に行きました
BACK INTO ENGLISH
I went to the cookie shop with my mother
INTO JAPANESE
私は母と一緒にクッキー屋に行きました
BACK INTO ENGLISH
I went to the cookie shop with my mother
You've done this before, haven't you.