Yay, my brain is bleeding!
Thomas took a grateful drink of the water before handing it back. He hadn't even realised her mouth had gone dry. He wanted to say that he was terrified; that three years wasn't enough. His father had had fifty some years before his symptoms had shown up, why should Thomas only get 34?
Instead, because Thomas wanted very much not to scare Jamie, he went to hug his son and he said, "it's going to be fine. I'll see a doctor and it'll be fine."