What word or phrase can I use to replaced the word "stopped" in the following text?

This is the text:

Erin scanned the room for a moment. She suddenly stopped, and
went over to the bookshelf. Then, as if she were searching for a secret
passage, she examined each book carefully.

(By stopped, it means that Erin suddenly stopped scanning the room and fixed her eyes on the bookshelf).

I'm not very sure about this but I think words like stopped and came to an halt are more commonly used to refer to someone who stopped walking or running (not sue if came to a stop sounds better).

Is there any other word or phrase that I can use in my example above? (unless stopped is perfectly right in this situation).