Man... as someone with chronic pain, I really relate to her more and more. I'm sure no one knew more then her what she was getting into with her own body.
When you live with pain, you live... restlessly. how much you want to do and how much you can do... hitting those limits is unbearable.
I appreciate her reminding him that she was *always* clear what this would take. The only person who under-estimated it was him.