"Awesome!" Now that's the kind of power that comes useful. It saves the hassle of having to break the lock of the door or something like that! Having interpreted York kneeling down as him preparing, Shelley takes the chance to examine the corner they're in right now.

Going inside through the wall will depend on there being nobody in there. If there's someone, though, they're going to have to make their way in by force or by cleverness, or search for an alternative to their exploration. For now, though, she looks for anything that could be worth noting -- security cameras already watching them, ventilation ducts...

...it's mostly cautionary, to be aware of their surroundings. You never know when you're going to notice something that can change the situation.