So I'm Ms. Cow

So I'm Ms. Cow is about a girl named Jillina, who has a poor family.  Jilina's family got stolen from when she was 3, and she and her 3 brothers and parents have struggled to survive.  But when a new author named Gertrude Maridtithirith publishes a book called The Life of Ms. Cow, this changes.  Movie auditions start almost immediately, and it's free to be in the movie.  Jilina is sent to auditions immediately, for if the movie is a success, anyone who was part of it gets $5,000.  Jilina honestly doesn't want to be in a movie, but she keeps telling herself, "It's for the family, it's for the family."
The auditions turn out well, and Jilina is starring Ms. Cow.  She has to dress up as a cow that walks on hind legs, splatter herself with mud, and eat coconut-flavored hay.  She HATES it.  But now she's stuck, dirty and annoyed, as a cow in a movie.