"Strange?" she supplies within that pause, going with the only qualifier she can think of that adequately encompasses all of this insanity in one pocket definition. Of course, the majority of that strangeness is thrown out the window as one thought instantly amplifies.

Her face is swirling mixture of relief and trepidation, thrilled at the possibility of Peter actually being here and half-horrified that he's been here. She just saw him, moments ago, face dirty and turned up toward her. What will he think of her? She hadn't thought of that on the way down. All she can say now is: "Peter's here?"

The implications of this being his roommate are entirely lost on her in the face of wanting to see him immediately.