Conversation so far:
what was the critical response to Augusta Jane Evans's work?
Augusta Evans Wilson was not a professional writer and her style was severely criticized.
why was Augusta Jane Evans's writings criticized so?
Augusta Jane Evans' style was severely criticized as pedantic.
what values did Augusta Jane Evans' heroes succumb to?
Augusta Jane Evans' heroes eventually succumb to traditional values.
what books did Augusta Jane Evans write?
Augusta Jane Evans' first book was  Inez, a Tale of the Alamo, written when she was still young.
was the Augusta Jane Evans book Inez, a Tale of the Alamo popular?
Inez was published by Harpers, but met with indifferent success.
what else is interesting about Augusta Jane Evans?
Her second book, Beulah became at once popular, still selling well when the American Civil War broke out.

Question: what was the book about?
Self-contained rewrite: what was the Augusta Jane Evans book Beulah about?