Answer:
When Momaday remembers his grandmother "most often at prayer," she is praying to Tai-me, the Sun Dance god.
Later in The Way to Rainy Mountain, the reader learns that Momaday's grandmother was present at many important Kiowa events, including the last complete Sun Dance where the religious rituals to Tai-me were completed.
Step-by-step explanation:
Momaday has lots of memories of his grandmother, He remembers his nanny. She had a good relation with the gods. We can say that the prayers about her sadness because of the tribe Kiowa dispersion.