Why did sadako think the spider had brought good liuk?

Sadako believed the spider brought good luck because in her culture, Spiders are often seen as symbols of good fortune and protection. She associated the spider's presence with the hope for healing and positive change in her life. Additionally, the idea of the spider weaving its web resonated with her longing for connection and resilience amidst her struggles. This belief gave her a sense of comfort and optimism during difficult times.