Heat the sugar and water in a skillet or sauté pan set over medium-high heat, stirring until the sugar dissolves and the mixture begins to boil. Let this cook, without stirring, until it becomes amber, about 3 to 4 minutes. Stir in the honey until blended and continue to cook, stirring occasionally, until the color deepens, about 1 to 2 minutes more, keeping the heat low enough so that it doesn't boil over.
Remove the skillet and whisk in the juice, being careful as it will spatter. Return the skillet to the heat and simmer, stirring, until the mixture is smooth and thick, about 3 or so minutes. Stir in the butter. Cover and set aside.
Beat the cream until it forms soft peaks, about 2 to 3 minutes. Beat in the powdered sugar and the Grand Marnier until firm peaks form, about 1 to 2 more minutes.
Fold each of the crêpes in half and then in half again to make triangles. Arrange the crêpes in the skillet with the sauce and heat through so that they soak up the sauce, about 1 or 2 minutes. Transfer the crêpes to dessert plates and garnish with the whipped cream.
Nutrition information per serving: