Regulus froze when the glass in her hand broke. He meant it as a joke. He didn't mean to get her upset. "Sorry, it was just a joke." He looked down at his hands and wrung them together. "You all right?" He didn't bother looking up just yet. He knew from experience that she'd probably need a minute or so.
"Kreacher won't hurt you, yeah? He's far too attached to me and knows I'd free him if he hurt any of my friends." Regulus had seen the way she was looking at the elf. "He's just worried is all."
He shifted uncomfortably under her gaze. He knew she wouldn't believe any lie that he told her now. "I...I'm better," he said truthfully. Though it was more better in the sense that he was less concerned that Kreacher would accidentally call one of his cousins than actually better.