"I've only ever heard about it," Edith says. "Enough to know that it happens, but experiencing it is... something else." Even just being on the receiving end of it, as it were, that's the case. It must be all the more jarring to be the one finding someone who looks like a person they've known. She could apologize, but it isn't as if she could have known this would happen, or like she can help the way she looks. It's just an unpleasant coincidence, leaving her still a little uneasy, not quite comfortable.