Why did the darveshis have mixed feelings when their tiger died in front of Sai?

The darveshis' reaction was twofold, as detailed in Chapter 31. They were sad-faced because the tiger was their primary means of livelihood and sustained their family, so its death was a practical and financial loss. At the same time, they were pleased at heart because they understood the spiritual blessing the tiger had received. They recognized that for the diseased creature to die at the feet of a saint was an act of great fortune that granted it liberation, a path to salvation.