Which character had the literacy device irony in olive senior two grandmothers?

In Olive Senior's "Two Grandmothers," the character who most embodies irony is the narrator's city grandmother.

The irony lies in the contrast between her outward appearance and lifestyle (modern, sophisticated, seemingly detached) and her inner life and relationship with the narrator. She presents a certain image of independence and worldly knowledge, yet her emotional connection to the narrator and her reliance on the country grandmother for a deeper understanding of family history reveal a hidden vulnerability and dependence that contradict her projected persona. This contrast between her presented self and her true self is the source of the irony.