Ok, so I called her. Here it is:
1 (3oz) package of watermelon flavored gelatin
1/4 cup of water
1 (12 oz) container of Cool Whip
2 cups Watermelon (No Seeds)
9 inch graham cracker crust
Mix together the watermelon gelatin and water. Fold gelatin mixture into the dessert topping. Add cut watermelon. Pour mixture into graham cracker crust. Cool in refrigerator for about 3 hours.
EASY!!!!
I found a picture too.
watermelon_pie.jpg