Alice Munro's short story "Silence" is told from Juliet's perspective, and contains various speculations about Penelope's feelings and her motives for leaving. However, the reader never discovers how Penelope really feels. At the beginning of the story, Joan claims to speak for Penelope, and says that her life with Juliet lacked a "spiritual dimension," but it is not clear whether Penelope herself felt this.

Given this background, here are some points to consider in thinking about what Penelope might say

1. Would she necessarily feel compelled to give any explanation of her behavior? The birthday card she sends is blank and anonymous. She might simply talk about her current situation, or reassure Juliet that she is well.
2. If Penelope does explain why she left, is it for the reasons Joan suggests: a lack of spirituality or deeper meaning in her life. Although Juliet seems to be a fairly liberal mother, Penelope might have felt stifled, as Munro mentions that they have always lived together.
3. Think of the story's title. Silence has been a feature of Penelope's relationship with Juliet. Perhaps leaving was easier than breaking the silence, in which case the letter might express this thought, or might say little or nothing.