She is but she has other problems

As the giant rock man that was formerly Ben Grimm walked into the elevator Sue stiffened up until she realised that he wasn't reacting at all. Looking down she confirmed that she was once again invisible, she breathed a sigh of relief causing Ben to turn slightly. As a precaution she backed away from him into the wall pressing her bare ass against the cold wall reminding her of her humiliating position, though she kept telling herself that it could be worse. There are probably plenty of women who end up naked without superpowers to help.

Her relief quickly turned to panic as she saw Ben press the button for the bottom floor which would take her further away from her clothes. The elevator began to move down for some reason ignoring that she pressed the top floor button first (something Ben failed to notice as well) and Sue begins to calm herself down.

This is OK, just wait for Ben to get off and then go back up to the top. This isn't a problem.

Her words were proven false as the elevator began to creak under Ben's increased weight and with every floor they passed the creaking grew louder and louder, even Ben began to look worried. Or annoyed it was hard to tell with him.

"You've gotta be kidding me" he exclaimed rather loudly. Confirming to Sue that he was annoyed. She brushed that though out of her mind as she thought about how to get back to the top floor without being seen. "Now I have to deal with all those idiots in the lobby".

Sue almost screamed before she stopped herself, she completely forgot about the dozens of reporters that were trying to get the story on New York's newest superheroes. The very idea having her naked body on the cover of every newspaper and magazine in the city terrified Sue and she knew she had to avoid them no matter what.

They finally reached the bottom floor and as the elevator doors opened what seemed like a hundred cameras started flashing. Sue looked down once again to make sure she was still invisible and slowly stepped out of the elevator and considered her options.