She confided all her secrets to her best friend.

她向她最要好的朋友倾吐了自己所有的秘密。

《牛津词典》

She telephoned her best friend to vent her frustration.

她打电话给自己最好的朋友来发泄她的沮丧。

《柯林斯英汉双解大词典》

Her best friend, my co-worker came.

她最好的朋友，也就是我的同事来了。

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She and her best friend still use it, especially when they do not want their children to know what they are talking about.

VOA: special.2009.12.04

So I threw a party in New York, and her best friend, my co-worker came, and she brought her,

我在纽约开了个派对，而她最好的朋友，也就是我的同事，把她带到派对上去了。

第一次与妻子见面 - SpeakingMax英语口语达人

Her best friend worked with me.

她最好的朋友和我一起工作。

第一次与妻子见面 - SpeakingMax英语口语达人

She was willing to give a kidney to her best friend's husband, Stuart Bloch.

CNN: Massive transplant effort pairs 13 kidneys to 13 patients

And he said that after everyone read her biography, they were her best friend.

CNN: Laura Bush on her first six months in the White House

Those sparkling gems may really be her best friend, or her husband, or even her dog.

ECONOMIST: For $4,000 you can now wear a loved one on your finger