An Infection?

Rosa's condition was stable the whole day after that, and Reynard was relieved that the worst had passed but then the next morning, Rosa's painful scream penetrated the air. 

Reynard flung off his covers and ran to ensure her safety, and was shocked to see her clenching her stomach and throwing up all over the floor. He didn't need to ask to know that the shooting pain had returned. 

"Let it out," he said as he rubbed her back. "It's okay, we can clean the floors. I'll bring you some water before I go get the doctor."

Reynard knew where Armand lived. He had handed him a piece of paper with his address on it yesterday before he left, and Reynard had discarded it, thinking it was of no use anymore. But as he fished it out of the trashcan, he realized how much importance this little piece of paper held.