"Outside." She only lets go of him when she's close enough to push open the window. Is this even the first floor...? Well, regardless of what floor it is she still hops onto the window sill once she has it open. Then she turns back, one hand on the frame to balance herself and the other reaching back for him. She's small enough and the window wide enough that it could probably fit one more person on that sill. "We should go before anyone sees us."

...are you escaping from prison or something?