Evidence of Mortality and Immortality are seen throughout the poem. The speaker's entire outlook on death and the mention of “Immortality” in the first stanza lead to the idea that she believes in an afterlife.
Life after death is a sort of immortality, though not in the sense many might desire. In the last stanza, she uses the word “Eternity” to describe what she has just come to understand. She remains calm and has a ponderous tone as she recalls the ride she just took after realizing that she is actually deceased.