D4: Dark Dreams Don't Die

To enter the shop at home, all you must do is go up to Amanda and interact with her. To enter the shop during a dive, you will have to interact with a cat that wears a large bow (similar to Amanda’s).

In episode one, you’ll see the cat on top of a row of seats. It's just before business class on the right hand side when facing the front of the plane. In episode two, the cat is in the room with the powered door, sitting on some cages that you must push for the "Zoologist" achievement.