Can you recount the story from Chapter 34 about the family that sought help for their son's incurable disease?

Certainly. Chapter 34 narrates the poignant story of a family from Malegaon in the Nashik district. A degree-holding doctor's young nephew was afflicted with a severe bone-cyst, referred to as Hadyavarn, which caused him unbearable pain. The chapter explains that despite the doctor's own expertise and the efforts of many other intelligent surgeons and physicians, every attempted remedy failed. After exhausting all native and foreign treatments without success, the desperate parents heard about the great saint, Sai Maharaj of Shirdi. Believing that his Udi could cure even incurable diseases, they packed their belongings and traveled to Shirdi. As described in Chapter 34, they prostrated before Baba, tearfully explained their son's suffering, and pleaded for his divine intervention, placing all their hope in him as their last resort.