YOU SAID:
I was angry that they went to the creek without me
INTO JAPANESE
私がいなくても彼らが入り江に行ったのは怒っていた
BACK INTO ENGLISH
I was angry that they went to the cove even without me
INTO JAPANESE
私がいなくても彼らが入り江に行ったのは怒っていた
BACK INTO ENGLISH
I was angry that they went to the cove even without me
That didn't even make that much sense in English.