What do we know about the relationship between Mr. and Mrs. Wright in the play Trifles that might help us to understand why she might have killed her husband?

What do we know about the relationship between Mr. and Mrs. Wright in the play Trifles that might help us to understand why she might have killed her husband? Write a 500-word essay on this topic. Support your answer by using specific, documented textual references from the play to support your analysis. You must include your works cited entry at the end of the paper and use MLA format throughout.