Maybe it was a pie of her own invention? Do you think her children might have preserved the recipe! I'm interested
I make mango cream and strawberry cream cakes for my kids' birthdays. It's cake on the bottom and cream on top (and sometimes a thin jelly coating as a topper, depends if I have the time). The "cream" layer is hand-whipped cream, flavored with either mango reduction or freeze-dried strawberry powder, and stabilized with gelatin so it doesn't separate. Cake and jelly are flavored with the same fruit too.
Now I'm thinking I might try with chocolate... yummy!