DID I MISS A CHAPTER WHEN DID AIDEN AND THE CAT CAN TALK TO EACH OTHER?

Personally I think either 1. The cat can talk to anyone and is simply choosing to only speak to Mabel so when it wants to, it will talk to Aidan or... 2. Aidan's powers as the Devil of Devlin are what makes him capable of hearing/understanding the cat. Otherwise you didn't miss a chapter, the cat just spoke suddenly lol