Who is Amelia Maugery from The Guernsey Literary and Potato Peel Pie Society and what is their importance?

Amelia Maugery is a member of the Guernsey Literary and Potato Peel Pie Society. She hosted the pig roast which led to the founding of the Society. After being assured that Juliet does not intend to make the Society into an object of ridicule in her "Times" article, Amelia befriends Juliet, and she is happy when Juliet expresses her desire to adopt Kit.