What led the family of the boy with the bone-cyst to seek help from Sai Baba in Shirdi?

According to the account in Chapter 34, the family turned to Sai Baba out of complete desperation. Their young son was suffering from a painful bone-cyst, and every possible remedy had failed. The text states that all native and foreign treatments were tried, expert surgeons felt helpless, and even worshiping their traditional deities brought no relief. It was only after all these efforts were exhausted that word reached them of a famous saint in Shirdi. They heard that Sai Maharaj could heal diseases by his mere sight and that his Udi could cure incurable ailments. They viewed the journey to Shirdi as a "last resort" to avert the calamity.