YOU SAID:

when I went to the park with my mom's mom, my mom said I should get a mom, and killed my dad's mom.

INTO JAPANESE

お母さんと一緒に公園に行ったとき、お母さんはお母さんを連れて行こうと言って、お父さんのお母さんを殺しました。

BACK INTO ENGLISH

When I went to the park with my mom, she told me to take her and killed my dad's mom.

INTO JAPANESE

私が母と一緒に公園に行ったとき、彼女は私に彼女を連れて行くように言って、私の父の母を殺しました。

BACK INTO ENGLISH

When I went to the park with my mother, she told me to take her and killed my father's mother.

INTO JAPANESE

私が母と一緒に公園に行ったとき、彼女は私に彼女を連れて行くように言って、私の父の母を殺しました。

BACK INTO ENGLISH

When I went to the park with my mother, she told me to take her and killed my father's mother.