I don't know what happened to her husband.

我不知道她的丈夫出了什么事。

《柯林斯英汉双解大词典》

This lady was genuinely surprised at what happened to her pet.

这位女士确实对发生在她宠物身上的事感到吃惊。

《柯林斯英汉双解大词典》

I don't know what happened to her.

我不知道发生什么了。

youdao

She is disturbed and trying to figure out why she is the way she is and what happened to her.

VOA: standard.2010.05.04

"I have to find out what happened to her."

VOA: standard.2010.03.30

So I picked her up and I took her to the couch and I just started talking to her about what happened.

VOA: special.2009.12.11

She adds that what happened to her "was surreal but it could've happened to anyone".

BBC: Kercher murder case: Amanda Knox proclaims innocence

"We can see evidence of what happened to her during life, " says paleontologist Bill Simpson.

CNN: Museum readies to assemble its T-Rex

Meanwhile, Lucero's mother still can't believe what happened to her son -- or why it happened.

CNN: Commentary: No time for hate