Lori contributes to the chorus of 'y-y-yes' very softly, stuttering a little.  She shifts uncomfortably when his gaze falls on her, blushing furiously.  One delicate hand comes up to toy with her ponytail, even after the professor is looking elsewhere.  She isn't quite to the point of grabbing Walter out of her book-bag and holding him in her lap, shield-like...but almost.  And it's only her first class!