After the battle, Mollie, the pretty and foolish white mare is nowhere to be found and the other animals react with alarm fearing that one of the men has harmed her or carried her away. She is, however, found hiding in her stall with her head in the hay, as she had taken flight as soon as the guns started firing. Mollie is generally unconcerned with the desires and goals of Animalism. Her main goal is to wear pretty ribbons in her mane, and she, unlike most of the animals, does not work very diligently on the farm. Instead, she has a way of sleeping in rather than getting up early in the mornings and of leaving work early because she claims she has a stone stuck in her hoof. She also refuses to learn the alphabet, save the letters in her name.
Mollie is the "foolish, pretty white mare" who drew Mr. Jones' trap and wore red ribbons in her mane. She's an animal very much concerned with creature comforts, whose first question to Snowball after the rebellion is whether she will still have sugar to eat. (She's told no.) Because she loves her material comforts, including sleeping in, Mollie can be a bit of shirker when it comes to pulling her weight on the farm.
After their victory in the Battle of the Cowshed, the animals are greatly alarmed when they can't find Mollie, fearing the men have harmed her or taken her away. True to form, however, during the battle, Mollie, frightened at the first sound of gunshots, runs off and hides in a stall, where the other animals find her "with her head buried in the hay of a manger."
Not long afterwards, Mollie runs away to rejoin her master and pull a cart. She represents the person (or animal) with a bourgeois mindset caught in a revolution she doesn't understand and doesn't feel she benefits from.
True to form, while all the other animals are fighting in the battle, Mollie is hiding to avoid being hurt.