Theo had found the cat pouncing after a frog in the garden and once he'd shown it to Greg with an easy smile unlike many of the ones he had these days he'd been allowed to keep it. He hadn't named the thing because he didn't have the wits about him to do so, but it was obvious that he was infatuated with the small animal; he took better care of it than he did himself.
He crouched down and looked into the long grass to try and find the kitten (which had retreated to the windowsill without Theo's notice and was lazily watching him look) when he heard footsteps brush across the grass. He turned to see Snape approach him, staring at him like the former Professor had come back from the dead to visit him. He flinched visibly at the use of the surname but seemed, oddly, too frightened of the man himself to look away for his father, who he was sure would be the only person referred to as such. He sat back in the grass, pulling his knees up to his chest a little and holding himself close, licking his lips nervously, the tension plainly running through his still too-bony frame.
"You, you, you, you can't, you're not, not allowed to, not..." he stammered, flashbacks taunting him as much as the memories he didn't quite have, making a threat from an inocuous situation. "I wasn't eavesdropping Sir!" he said, much like a plea, suddnly desperate. "I wasn't, I wasn't, I promise I wasn't, I didn't hear anything, I didn't hear anything, I didn't..." he cowered back and closed his eyes like he was expecting a blow, his pulse racing as he panted to breath normally.