So this version of Daisy appears in the quest as a cheap replacement that Gumball and Darwin either made themselves or bought somewhere (it's unspecified). They give it to Anais and she doesn't really fall for it. Gumball pulls the string on the back of the doll and it starts walking back and forth while singing: "I am Daisy the small donkey, I love to dance." in Chinese, after a few seconds, one of the eyes pops out of its socket, causing the doll to burst into flames, causing everything on it to melt off completely, leaving only a metal skeleton. I hope this helps I guess idk