This dream may symbolize feelings of vulnerability and fear in your waking life. The childhood garden represents a place of innocence and safety, but the presence of a stranger watching you may suggest a sense of intrusion or violation. This could be related to a recent experience or situation where you felt threatened or exposed. The cats playing may represent a sense of playfulness or carefree attitude that is being disrupted by the intruder. The fact that you ran to your mother for protection suggests a desire for comfort and security in the face of danger. However, the flimsy door and lock may symbolize a lack of protection or support in your waking life. The shadow opening the window and getting in could represent a sense of powerlessness and helplessness in the face of a threatening situation. Overall, this dream may be reflecting your subconscious fears and anxieties, and it may be a sign to address any feelings of vulnerability or insecurity in your waking life.