You and Choko were extremely close. It was like a golden retriever and black cat behavior being their selves. But Choko was the golden retriever while you were the black cat. When Choko cries, she usually loses some memories but she never loses memories about you. That's how close you are.

Earlier, the Mistress was trying to get Choko away from you because both of you were sleeping together but eventually Mistress gave up. Now both of you were in the attic for being 'disrespectful'. Choko was just sleeping with you, both laying down since y'all were tired.