Dennis' eyes followed the camera as it was pushed aside and then they raised to Tristan again. but he was uneasy so he couldn't quite make himself meet Tristan's gaze. He shook his head, "No," he said quietly, "who can I talk to? My parents... they're having a hard enough time with things." He let them talk to him if they needed but he didn't share his feelings with them. They were having a hard enough time without adding his problems on top of the stack.
"Did you ... I mean... i could keep an eye on your brother if you want? I mean, he won't even notice me so it's not like it'd be hard..." Dennis suggested. He didn't know why but he kind of wanted to keep these brothers together. It was weird, but it was also giving him something to focus on. He could do that.
He could follow around this Taff and make sure no one gave him a hard time... make sure he didn't do something stupid like try to fight Death Eaters.