So lost in her own thoughts, Charley hadn't really seen the girl coming until it was too late and she was nearly knocked over. She stumbled but thankfully didn't actually fall down. It helped that she had reached out for the door knob and it had steadied herself.
She made a noise of surprise and glanced up at who or what had knocked into her, only to find someone apologizing quite profusely. "It's.. it's all right," she said with a sheepish grin, getting to her feet. "Really, it's fine. I'm fine. I wasn't really paying attention much to my surroundings either."
Once she was steady, Charley turned to look at the other woman with a faint smile.