If the book doesn't mention the saint I'm devoted to, does that mean my path is wrong?

No, the absence of a specific name does not invalidate your path. The teachings in Chapter 19 are universal and apply to any sincere devotee. The text states, "The Lord has spoken this determination; the words 'Ye yatha mam' (As they approach me...) put the entire burden on one's actions." This means the manner of your approach is what matters. Chapter 19 further comforts the seeker by saying, "Whatever He does will happen; He alone will show the way; the time will come in a moment, and the heart's desire will be fulfilled in abundance." This reassures us that as long as we nurture good thoughts and surrender with an undivided heart, the Master, by whatever name we call Him, will show the way and fulfill our spiritual aspirations.