YOU SAID:
natalia started the fight between us
INTO JAPANESE
ナタリアは私たちの間の戦いを始めました
BACK INTO ENGLISH
Natalia has begun a fight between us
INTO JAPANESE
ナタリアは私たちの間で戦いを始めました
BACK INTO ENGLISH
Natalia has begun a fight between us
That didn't even make that much sense in English.