It can be inferred that Mrs. Darling wants to keep Peter with her because she sees him as a source of wonder and excitement in her otherwise mundane life. She may also feel a sense of motherly affection towards him, wanting to protect and care for him. Additionally, Peter's presence may provide a sense of adventure and escapism for Mrs. Darling, allowing her to temporarily forget her responsibilities and worries. Overall, Mrs. Darling likely values Peter's company for the joy and excitement he brings into her life.
