Stir together first 3 ingredients just until blended.
Beat whipping cream at medium speed with an electric mixer until soft peaks form; fold into cheese mixture. Spoon mixture into a zip-top plastic freezer bag. (Do not seal.) Snip 1 corner of bag to make a 1/2-inch hole.
Cut ladyfingers in half crosswise. Press 1 ladyfinger half into bottom of each shot glass. Spoon 1 1/2 tsp. lemon curd into each glass. Pipe a small amount of mascarpone mixture into each glass. Repeat layers once with remaining ladyfingers, lemon curd, and mascarpone mixture. Top each with 1 raspberry and 1 mint sprig. Cover and chill 2 hours.