According to the source, what specific factors determine the method Sai Baba uses to bestow grace upon a devotee?

The text provides a clear framework for understanding how Sai Baba's grace was dispensed. Chapter 27 explicitly states that the method of grace is determined by several key attributes of the devotee. These factors are the individual's authority or spiritual standing, their unique mental disposition, the quality and extent of their service, and the depth of their love and devotion. This is why his path of instruction varied so much. The text contrasts this with a patient who doesn't understand their own illness and simply asks for something sweet. Baba, like an expert doctor, diagnoses the devotee's true need based on these factors and applies the appropriate method of grace, rather than a one-size-fits-all solution.