LOL! They do that to you don't they.
Just got a new kitty myself. Her name is Patches. She's black with orange patches in her fur. Haven't seen her since Saturday morning, but I know she's okay because food and water disappear in the night.
She leaves presents in her litter box and I hear her exploring when she thinks no one is around.
She too was separated from her family. She was raised in a barn and isn't used to people at all. This will be slow going.
Fortunately, AH is a real cat person.