Complex sentence: Her older sister Rose organizes a meeting with a Catholic priest Father Flood on a visit from New York City, who tells Eilis of the wonderful opportunities awaiting her in New York with excellent employment prospects.
Split into simpler sentences: Her older sister Rose organizes a meeting with a Catholic priest, Father Flood, who is on a visit from New York City. He tells Eilis of the wonderful opportunities awaiting her in New York, with excellent employment prospects.