What was the thought process that led the nephew's parents to decide on visiting Shirdi as a final option?

The decision to visit Shirdi is detailed in Chapter 34 as a final act of hope after all else had failed. Having exhausted every medical avenue and finding no solace in traditional worship, the family heard stories of Sai Maharaj of Shirdi. They were told he was a great Avaliya (saint) who could heal diseases by sight and that his Udi could cure even incurable ailments. According to the chapter, their reasoning was, "What is there to lose in gaining this experience?" They decided to try this "last resort" and bow at his feet, hoping this path might avert the calamity, viewing it as the only remaining way to overcome their suffering.