Ember went to her new home at around 7 this evening. My cousin and her partner were amazed at the amount of luggage I'd accumulated for her in just over a month (new litter tray, new bed, play tunnel, new bowls, new toys, her own spider plant and cat grass) and played with her from the moment they came into the house - she'd run to the door when they knocked to investigate who it was!
They called me just over half an hour ago to say that she'd had something to eat, and had made the kitchen hers. She and Indie have been introduced briefly and other than a bit of growling and hissing, there has been no obvious aggression. (Body language was positive, no flattening of ears and such.)
I'll miss her living with me, but I'm hoping to pop up on Saturday to see how she's getting on.
All my cats are dotted around the house asleep; because they can without a full on attack from a kitten!