I'm glad they still had an immunity challenge/tribal even with a person leaving the show.
I felt bad for Dana - 2 minutes of screen time and then having to leave. I can't blame her wanting to leave - I had "acute gastroenteritis" a few years ago and ended up in the ER because of pain/dehydration since I couldn't even keep a swallow of water down. If you had offered me going back to a cold, rainy, wooden shelter, getting medical attention, or being clubbed in the head. I would have have opted for one of the last two way before the first.