Though initially and genuinely startled Lisa wasn't above laughing at herself. Poor mood or not acknowledging when one was being a bit too serious was a virtue, right? Well, either way the fact that she felt stupid enough to fall for the situation seemed to pull her a little farther from her sour mood.
When she realized it was Michael causing her hair to stand on end she exhaled in relief and she tried to fake her agitation - an untamed chuckle present. "You're such a prat," she expressed as her hand raised as though to mimic the motion of backhanding him. She didn't actually hit him, of course, and instead continued the turn of the shelf.
"And I'm not in a foul mood," she lied trying to mask a natural pout. "You're smelling someone else." She walked around him and went to browse the next row of books. Her attention span, however, was distracted. Making a sudden connection she asked, "Is this where you've been hiding lately?"
Lisa had noticed that Michael had been missing as of late. Course, she wasn't exactly looking for company the last few days....alright, weeks. But, it wasn't like she hadn't spent the occasional evening in the common room. And if memory served correctly she didn't see him around there much. She left out the logical bit about how she was usually occupied with something else and not exactly paying attention to who was around her. As far as Lisa was concerned....it was ... everyone else who'd been absent.