YOU SAID:

A girl who used to be one of my very best friends had a baby.

INTO JAPANESE

私の最も親しい友人の1人だった少女は赤ちゃんがいました。

BACK INTO ENGLISH

The girl who was one of my closest friends had a baby.

INTO JAPANESE

私の親友の一人だった少女は赤ちゃんがいた。

BACK INTO ENGLISH

The girl who was one of my best friends was a baby.

INTO JAPANESE

私の親友の一人だった少女は赤ちゃんだった。

BACK INTO ENGLISH

The girl who was one of my best friends was a baby.