Though she was tired, her senses were on alert for any movement. Any person who didn't belong.
So she was jolted with terror when a hand grabbed her arm and yanked her into an alley between two apartment buildings...
*sigh* Really? Another near rape? Why ... just why?
Also, you're not alert if you're snuck up on that easily. She didn't notice anything until he grabbed her? (Please note, I'm not blaming her, but pointing out the fallacy in the text.)