What are the linguistic features of the poem Grandma?

This is a touching poem. In the seemingly calm narrative, there is a great passion of the author. In my initial view, my grandmother's image was "old and poor" and she could not bring anything to herself. But when I was sensible, my grandmother was buried in the grave, and the gift she gave me was actually the deepest, that is, giving birth to me, raising me and caring for my mother. Although the author didn't say mom, the word "mom" gave people a lot of imagination.