Sirius started when Lily touched him, bringing his head up to look at her, taking a slow breath - because he wasn't just sitting in here crying. He was getting some space, thinking things over, trying to see any way to change things - of course when it came to breaking curses Sirius just didn't have the sort of know how to manage that.
"Lily." His voice cracked when he spoke and he stopped before he let it fall apart completely. He was very far from okay right at that moment.
"He's going to die." He told her quietly, he didn't know if he would be able to talk to Remus or James about this, he'd done his best the night before after several drinks and prodding from the two of them, but to be honest like this with his fears - especially when it was something like this, he didn't know if he could have said that to them.
"They haven't found a cure yet and he's getting worse every day." Hell every hour it seemed like at some times.