Kate's breathing is getting better, her lung is draining, and she is able to do more walking (which helps the fluid drain), although she still has several tubes along with her on these walks.
Although more test results, due in 48 hours, may shed light on the diagnosis, the best guess is that Kate had a case of pneumonia. Whether there was more going on is yet to be determined. But it looks as though she will be in the hospital at least one more week.
They expect that Kate will need to be seen in outpatient treatment for a couple of months, so we'll stay around Albuquerque for that time.