How does Ann tend to the man while he is sick?

Anne takes Mr. Loomis to her house. She gets the man water and makes him soup. Ann sets the alarm clock to wake her every two hours so that she could periodically check up on the man. The next day, she gives him breakfast. He begins to talk and berates himself for being so stupid as to take a dip in the creek without measuring its radioactivity. He asks Ann to measure it for him, and after she tells him her findings, he concludes that he has radiation poisoning.