Everything you need to understand or teach A Separation by Katie Kitamura.
A Separation is a novel written in in the first-person perspective of the protagonist, an unnamed translator who is separated from her philandering husband Christopher. After Christopher goes to Greece to do research for a book, he becomes impossible to reach, and the protagonist must go to Greece to find him. She decides that she will ask him for a divorce when she finds him, but unforeseen complications arise that force the protagonist to grapple with ambiguous moral quandaries. This novel explores themes of marriage, grief, relationships, obligation, and the disparities between law and morality.