The "McDonald the little girl" you might be referring to is not explicitly clear from your query, but here are two notable references related to "McDonald" and a little girl:
- Megan McDonald and Judy Moody : Megan McDonald is an American children's author famous for creating the character Judy Moody, a spirited third-grade girl featured in a popular series of children's books. Judy Moody is a fictional little girl, the protagonist in McDonald's books aimed at young readers (grades 2–4). Megan McDonald herself was born in 1959 and has written many children's books, with Judy Moody being her most famous creation
- Eleanor Evenson, the girl born at McDonald's : There is a real-life story of a girl named Eleanor Evenson who was born in a McDonald's restaurant in Hugo, Minnesota, in 2014. She returned to the same McDonald's to celebrate her 10th birthday, which made news due to the unusual birthplace and the community's connection to her
If you meant "McDonald the little girl" as a specific individual, it might be either the fictional Judy Moody created by Megan McDonald or Eleanor Evenson, the girl born at a McDonald's restaurant. If you have a more specific context or detail, I can provide a more precise answer.