What is the main conflict in Summer by Edith Wharton?

Like the protagonist in Ethan Frome, Wharton's most widely read novel today, Charity yearns for a fuller life than the one she lives in her small town, but social restrictions and a certain weakness of character prevent her from realizing her dreams. One of the first American literary novels to deal frankly with a young woman's sexual awakening, Summer begins with a chance encounter, has a passionate affair at its center, and ends with a wedding. In this bare outline, Summer appears similar to hundreds of "sentimental" novels of the period, but critics agree that Wharton's depth of feeling and rich prose have turned a conventional plot into art. The novel's contemporary reviewers argued heatedly over the meaning of the wedding, and the question continued to interest critics in the twenty-first century.