"All right," Severus said with a nod. He raised his hand in a wave, as Lily turned away, and then cast a Silencing Charm on the hut after he'd stepped outside, as well, and he conjured a warning sign. That would work, until he made something more durable.
Perhaps he would let Ariana and Lizzy help with it, after all.
But for now, he was looking forward to a shower, much more than he had for a long time. He could only hope that Mercy was out for the afternoon.