YOU SAID:
She has a bun in the oven.
INTO JAPANESE
彼女はオーブンにパンを入れています。
BACK INTO ENGLISH
She is putting bread in the oven.
INTO JAPANESE
彼女はパンをオーブンに入れています。
BACK INTO ENGLISH
She is putting the bread in the oven.
INTO JAPANESE
彼女はパンをオーブンに入れています。
BACK INTO ENGLISH
She is putting the bread in the oven.
That didn't even make that much sense in English.