She needs chocolate milk but doesn't have the means to make it.
Solution
Tiffi helps and plants chocolate-type flowers and Cow's chocolate milk supply flourishes.
Full list of appearances
Reality: Dreamworld:
Milky Moo is a minor character in Candy Crush Saga. She is encountered in the 17th episode Chocolate Barn. Before introducing level 231, she requires chocolate milk but does not have the means to make it. After completing level 245, Tiffi helps and plants chocolate-type flowers, and the cow's chocolate milk supply flourishes.
In the 17th Dreamworld episode, Funny Farm, she, another cow and Tiffi enjoy a feast full of chocolate goodies.
Trivia
In reality, cows cannot produce chocolate milk. To make chocolate milk, you have to put chocolate syrup or cocoa powder in milk.
Due to April Fools 2020, almost all episode characters (but eight) have been absent from the game. A few other characters make occasional appearances in events.