For the moment, Tierney too just found her new 'shadow' to be annoying. Although she was sure that it would quickly grow to creep her out. After all, wouldn't anyone be a little freaked out if they were constantly being followed by someone or something they couldn't see. Which all looped back around to her theory that she had just completely lost her mind. It really was a pretty good explanation for all of the weird things going on lately.
She was too busy looking behind her once more to notice the other person in the hallway. And so, she walked right into him, knocking herself on her ass in the process. "Shit. Sorry - Oh, hey, it's you!" What was his name again? It would come to her, she just needed a second or two to focus.