YOU SAID:
It's her fault that the kid got hurt!
INTO JAPANESE
子供が怪我をしたのは彼女のせいです!
BACK INTO ENGLISH
It is her fault that the child was injured!
INTO JAPANESE
子供が負傷したのは彼女のせいです!
BACK INTO ENGLISH
It is her fault that the child was injured!
That didn't even make that much sense in English.