YOU SAID:

The man, whom me and my brother in law's friend are acquainted to had strangeled her before she was able to call the police

INTO JAPANESE

私と義理の兄弟の友人が知っている男は、彼女が警察を呼ぶ前に彼女を見ず知らずにしていた

BACK INTO ENGLISH

The man I and my brother-in-law's friend knew had made her a stranger before she called the police.

INTO JAPANESE

私と義兄の友人が警察に通報する前に彼女を見知らぬ人間にした

BACK INTO ENGLISH

My brother-in-law and I made her a stranger before we called the police.

INTO JAPANESE

義兄と私は警察に通報する前に彼女を見知らぬ人にした。

BACK INTO ENGLISH

My brother-in-law and I made her a stranger before we called the police.