Looks like Cocoa actually got her present immediately, Cocoa can never handle when someone is genuine, makes sense she pretended to not hear anything even though the manga has been building up to Chino admitting that in front of her for ages.
It would actually be really cool if Fuyu figures out Chino's ventriloquism is fake considering she is a real ventriloquist. Maybe Fuyu will be the key to figure out why grandpa ended in Tippy, she has to know first what's really going on and I always wanted someone besides Takahiro and Chino to know.
Chino jealous at the "Coco-nee", it's really interesting how Chino gets along perfectly with Fuyu but when Cocoa appears besides them she instantly goes jelly at her, it's like she forgets when Cocoa isn't there.