From what she has, her hairstyle had come from Maria, her buck teeth had come from Keswick, her tail had come from Maria, her freckles were from Keswick, and her nose is kind of a combination of Maria's and Keswick's noses. Her skin color also comes from Keswick.
Stephanie is kind of shy, and smart, and also afraid of boys. Her fear of boys goes kind of to Keswick, as of Keswick's fear of girls. She doesn't have much of her personality that goes to Maria, except for her voilence.