Complex sentence: Molly asks how Ray is doing and Roma says she is doing well, which prompts Molly to go on a rant about how Roma knows nothing about her daughter and needs to treat her as a child, not a grown up.
Split into simpler sentences: Molly asks how Ray is doing and Roma says she is doing well. Which prompts Molly to go on a rant about how Roma knows nothing about her daughter and needs to treat her as a child, not a grown up.