I'm glad she seems to be doing better. Cats are creatures of habit in the extreme, way extreme in some cases. I've had cats who got upset when I'd move some furniture (just a chair or table, nothing major). Then, I've had cats who saw the rearranged furniture as an opportunity to get to new heights.

You'd previously posted that the change in her dad's work schedule was only a change in his days off, but later mentioned that his work schedule had changed several times lately. In our household, it seems more difficult for our cats to adjust to a change in schedule than us, especially if they never get into a new routine before it's changed again.

Now that Fuzzy works nights and I work days (and we have really weird schedules), our cats have found more time than ever to sleep and not get so overly tired from having to entertain us. At least we know to expect this and we can help make the trasition easier on them.