Cancer drug experiment

"Uncle Caleb, how do you feel now?" Iris asked in a worried voice when she noticed how her uncle lay on the bed with various equipment connected to his body. Luckily for them, he wasn't dying just yet, and the machines were to monitor his various organs. 

"I feel great, little one. No need to worry about a thing." He forced out the words guiltily but had no plans of worrying Iris with his problems. He wanted her to clear her mind, so she'd feel less guilty about everything she did to them. He also didn't wish for her to feel guilty about his sickness anymore. After all, he had someone to thank for staying alive for this long.

"Are you sure?" Iris drawled out as if she couldn't feel her uncle's pains or read his thoughts. She played along and smiled amiably, allowing him to believe that she bought his lies. However, before Iris could say anything further, Rachel walked in with a serious expression.