At last I’ve finished! Thanks to @wa7trel on twitter for suggesting a sinister kitten.
They were so happy. And yet the house felt, somehow, empty.
At the shelter, old moggies yowled, a frightened furball cowered behind a chair, waifs and strays snarled and hissed, with every hair on end. Except for one. A purring, green-eyed princess. They brought her home. Behind them, as they shut the door, the cats grew calm. The princess purred.
She didn’t shed or drool. She never scratched or bit.
Just sat and sat and sat. And stared. And purred.
These days, the couple hiss and spit and snarl at one another.
And all the time the green-eyed princess purrs.