An even bigger mystery

Rosario slammed the door behind her as she panted and closed her eyes, her heart beating a hundred miles a second. That was way too close for comfort!

Speaking of comfort, the carpet of the empty office seemed a lot harder than it was before. And did it suddenly get colder then before?

Rosario opened her eyes and gasped. This was not the empty office one floor above her own. Somehow, in ways she had no idea of understanding, she had found herself on the roof of the twenty story building she worked in! Looking behind her, she was stunned to see that the door to the stairwell had been transformed into the door that lead to the roof.

"But I was going... This doesn't make... How did... I..." Rosario stammered, letting out a groan as she covered herself with her hands and crouched down. "What the hell is going on?"

She decided to worry about that later, making getting back inside her top priority at the moment. As she reached for the door handel, however, she unfortunately found it locked, letting out a groan as she remembered that the roof door couldn't be opened by anyone other than the maintenance crew.

"Great!" She muttered, leaning back against the door with her bare back and butt pressing against the cold metal. "Now what?"