She actually just had a big, healthy-looking poop a few days before this started. I do soak her regularly (she fasts so much I worry about her getting dehydrated so I got in the habit of soaking her a few times a week - it helps that she loves the water too).
I sure do hope we don't have to deal with anything like parasites, but it has been a few years since I've had fecals done, so that is probably in order. Thanks for the reply!