It appeared that everyone in the house still remembered her mother, Solina Marilyn. Almost all of them also feel a certain guilt for they had closed their eyes during her mother's death and perhaps felt fear as Lady Gladys had kept uttering words how fearful she is for the haunting ghost of a woman in white. Perhaps that was the reason Madam val had thought that the window opening on its own and the book falling was caused by her mother's ghosts.
As she walked out of the curtain, Lady Sophia who she didn't realized had been holding tightly to her hand poked out her head and spoke, "That woman from earlier is the housekeeper of the Vernon's, right?"