YOU SAID:

My sister grasped the cookie from my hand as I was bringing it to the table. I was quite offended by this but she eventually gave it back.

INTO JAPANESE

私がテーブルにクッキーを持っていくと、妹が私の手からクッキーをつかみました。私はこれにかなり腹を立てましたが、最終的には彼女はそれを返しました。

BACK INTO ENGLISH

As I brought the cookie to the table, my sister grabbed it from my hand. I was pretty upset with this but eventually she gave it back.

INTO JAPANESE

私がクッキーをテーブルに持っていくと、妹が私の手からそれをつかみました。私はこれにかなり腹を立てましたが、最終的には彼女はそれを返しました。

BACK INTO ENGLISH

As I brought the cookie to the table, my sister grabbed it from my hand. I was pretty upset with this but eventually she gave it back.