YOU SAID:
She said, she sells seashells down by the seashore.
INTO JAPANESE
彼女は、海岸で貝殻を売っていると言いました。
BACK INTO ENGLISH
She said she sells seashells on the beach.
INTO JAPANESE
彼女は浜辺で貝殻を売っていると言った。
BACK INTO ENGLISH
She said she sells seashells on the beach.
That didn't even make that much sense in English.