But she will think about it and the possibility will work away in her mind.

Yet there were other thoughts working in my mind.

"Something of the sort was working in my mind but I had no time to think it out."

Ozbek worked the pieces in his mind as he spoke.

By the time we reached Croydon, several ideas were working in my mind.

But my master's troubled mood continued; he seemed to be working something out in his mind.

She seemed to be working something out in her mind.

Was the drug still working in her mind, that she could see it all so clearly?

I obeyed; wondering what strange fancy might be working in her mind.

That takes a lot of working in your mind to say it is not my fault.