Here is a short update. After keeping her tank higher in humidity and removing the heat rock, she still looks a bit jerky but did something today that really surprised me: she started cleaning herself. She cleaned her feet and worked her fangs a great deal. She still usually sits in the ready-to-pounce stance, but I would think that her attending to hygiene might be a positive sign. I also think she might have eaten a cricket last week, as I gave her two and only found one left over.