「おや? と思って振り返るとちゃんといるのです。」


A taxi driver picks a girl up. He is driving. Unintentionally he looks at
rearview mirror and he doesn't see anybody. Then I found this sentence:

> おや? と思って振り返るとちゃんといるのです。

When I have read it I have understood that he is driving, he sees that nobody
is there, he turns to the back seat but the girl is there. However, it doesn't
make any sense to me. At the end of the story the author says that he was
afraid but he continued to drive and when he stopped the girl was not there.

Can somebody explain this sentence to me?




This story is a horror story.  
I suggest that this girl was a **ghost**.

Don't you feel horrible to know the following series of phenomena?

1) A taxi driver picked up a girl. - **She was there**.  
2) While he drove for a while, he found that the girl was not reflected in a
rearview mirror where she should be. - **She wasn't there**.  
3) He turned to the back seat but the girl was there. - **She was there**.  
4) He continued to drive and when he stopped the girl was not there. - **She
wasn't there**.




The pivot point is と, "when"".

Literally: "When, thinking 'What on earth?', he turned round, she was there
sure enough"

More idiomatically: "'What the..?' he thought, and turned to look. There she
was all right."

ちゃんと means right, proper, neat, tidy, precise, accurate. I'd say the sense
here is "and no mistake"

