Why was marilla crying in Anne of Green Gables chapter 31?

In Chapter 31 of "Anne of Green Gables," Marilla is crying because she is deeply moved by the thought of Anne leaving Green Gables to pursue her dreams. She feels a mix of pride and sadness, realizing that Anne's departure signifies the end of a cherished chapter in her life. Marilla's tears reflect her deep emotional bond with Anne and the fear of losing the joy and companionship that Anne has brought into her life.