Final answer:
Based on the context of the girl's distinctive qualities and Claudia and Frieda's ridicule, they might ironically call her 'Miss Perfect' to mock her uniqueness.
Step-by-step explanation:
The context provided does not align with a typical naming scenario, but rather describes a character with a pronounced personality and physical features that suggest she will grow to affect many with her beauty and vitality. There is no specific name given to this character from the details provided, but if we infer from the text that Claudia and Frieda do not like a girl who is distinctive and perhaps enviable, they might call her something that mocks perceived perfection or beauty, such as D. Miss Perfect. This seems fitting, given the irony that a girl who has not yet grown into her beauty is seen as 'beautifully ugly' but has an undeniable spark. Claudia and Frieda might ridicule this girl by calling her 'Miss Perfect' as a way to mock both her current uniqueness and their prediction of her future beauty and influence.