A sneeze threatened her, and she suppressed it with a sniff. So great was her concentration on the task at hand, that when the knock came at the door it startled her into dropping all the books with a muffled thump. So much for a little order. Pushing herself to her feet, she went to the door, yanking it open.
Ross stood there, his hand still raised to shoulder height. Petra had to swallow a giggle. It wasn't like she looked much better at that moment - her hair pulled haphazardly into a loose ponytail, dust coating her sweater - and exactly at that moment, the sneeze won. "Achoo! Sorry. Can I help you?" She peered up at Ross, an expectant smile gracing her lips.