Since we don't have much information about what 'Veronica based on a true story' is precisely, it could be anything. If it's a book, perhaps it chronicles Veronica's journey through a particular period of her life, like her childhood in a small town and how the real - life events there shaped her into the person she became. It could also be about her career, her family, or her encounter with some extraordinary circumstances that are worth telling as a story based on truth.