Can you share some real-life stories from the book about Udi healing people?

Certainly. Chapter 33 of the Sai Satcharita provides several powerful testimonials about the healing glory of Udi in a footnote by R. Hari Sitaram Dixit. One story is about Khimji Lalji Joshi's daughter, who was so weak she couldn't walk. After being brought to Shirdi, Maharaj applied Udi to her, and within days she could walk again. Another account mentions Dixit's friend, who suffered from insomnia for eight days. After taking Udi for just one night, he slept soundly. A similar miracle occurred with a friend's child from Bandra who hadn't slept in two months but began sleeping normally after visiting Shirdi.