Step #1 ---SAUCE------ 1 pt Strawberries; sliced 2 tb Sugar FOR CHARLOTTE: Place nectar in small saucepan.
Step #2 Sprinkle top gelatin over.
Step #3 let this stand 10 mins to soften gelatin.
Step #4 Stir over low heat/flame until gelatin dissolves.
Step #5 remove this from heat.
Step #6 Puree 2 c mangoes in processor.
Step #7 place this in medium bowl.
Step #8 stir in the nectar mixture, sugar and lemon juice.
Step #9 Place bowl over large bowl filled with ice water.
Step #10 Stir mango mixture every once in awhile until cold & beginning to mound, about 10 mins.
Step #11 Fold in yogurt & 1/2 c sliced mangoes.
Step #12 Chill over ice water 5 mins longer, stirring every once in awhile.
Step #13 Arrange enough ladyfingers over bottom of 8-inch-diameter springform pan with 2-3/4-inch-high sides to cover completely, trimming as necessary.
Step #14 Halve remaining ladyfingers crosswise nad stand around sides of pan, edges touching & rounded sides out.
Step #15 Spoon mango mixture into pan.
Step #16 Cover with plastic; chill until set, at least 5 hrs.
Step #17 FOR SAUCE: Puree strawberries & sugar in processor.