Pink Grapefruit, Strawberry, and Champagne Granita with Sugared Strawberries

Name: Pink Grapefruit, Strawberry, and Champagne Granita with Sugared Strawberries
Yield: Makes 6 Servings
Ingredients: 1 1/4 cups sugar, divided; 3/4 cup water; 1 cup small strawberries, hulled (about 6 ounces); 3/4 cup fresh pink or ruby grapefruit juice; 2 1/4 cups chilled brut Champagne; 1 1/2 teaspoons grated lemon peel; 9 teaspoons mascarpone cheese; 18 whole small strawberries