I have not noticed any concerning differences in her mannerisms or routine since the fog moved into Hogsmeade, but I must admit that she has seemed more tense than usually. I have not worried much about it; the entire village has been rightfully concerned about the fog and its effect on their day-to-day living, and I assume Clara feels much the same. Unlike other families, our schedule has been much thrown off by the sudden crisis. It feels like my time at work has doubled, and that, combined with the time it often takes to get between home and work, has seen me spending less time at home—and as such, with her.

As she is your sister, I do not presume to know her much better than you. If you've noticed disconcerting changes in her behavior, I would be much obliged to watch her closer and more carefully to ensure that she's hiding nothing that should be of concern.