Ron had been attempting to find a house elf to see about some chocolate and then gone to find Jamie when he got Hermione's message and sod it all, he decided it could wait before rushing up the stairs to find Hermione and Rose still on the way to the Infirmary. Rose was more important and anything else could wait.
"Well I've got someone checking on chocolate." He grinned as he joined the both of them, though he couldn't help the worry he felt for his daughter. "Now we'll see if it actually happens."
This was not at all what he had expected when he'd first heard the outburst in the great hall, and yet here they were taking Rose up to the infirmary, Ron didn't know what had come over his daughter, but there was no denying this wasn't normal behavior.