I have a test where I am given the following article, what is an answer for the question: Who is Christopher's sister in a relationship with? ?

Lucy Harmon, a nineteen-year-old American, is the daughter of well-known (now deceased) poet and model, Sara Harmon. The film opens as Lucy arrives for a vacation at the Tuscan villa of Sara's old friends, Ian and Diana Grayson (played by Donal McCann and Cusack, respectively). Other guests include a prominent New York art gallery owner, an Italian advice columnist and an English writer, Alex Parrish, who is dying of an unspecified disease. Lucy goes for a swim, and finds that Diana's daughter from a previous marriage, Miranda Fox, is also there with her boyfriend, entertainment lawyer Richard Reed. Miranda's brother, Christopher, is supposed to be there, but he is off on a road trip with the Italian son of a neighboring villa, Niccoló Donati. Lucy was particularly hoping to see Niccoló, whom she had met on a previous visit to the villa, four years earlier, and who was the first boy she'd ever kissed. Lucy and Niccoló had briefly exchanged letters after this first visit. One letter in particular Lucy had admired so much she memorized it.
Lucy reveals to the gallerist that she is there to have her portrait made by Ian, who is a sculptor. She says it's really just an excuse for her father to send her to Italy, "as a present." Smoking marijuana with Parrish, Lucy reveals that she is a virgin. When Parrish shares this information with the rest of the villa the next day, Lucy is furious and decides to cut her visit short. While she is on the telephone booking a flight to New York, however, Christopher and Niccoló return from their road trip, and Lucy is once again happy, although she is disappointed that Niccoló did not immediately recognize her.

Richard Reed