Complex sentence: Angry and frustrated by Hank's conitinuous cold shoulder, Marie resumes her kleptomania; she starts stealing objects from real-estate open houses, where she also makes up elaborate stories about who she is, but is eventually caught by a real-estate agent.
Split into simpler sentences: Angry and frustrated by Hank's cold shoulder, Marie resumes her kleptomania. She starts stealing objects from real-estate open houses, where she also makes up elaborate stories about who she is, but is eventually caught by a real-estate agent.