"[Sarah] Polley does not speak directly in the film; in Stories We Tell, the voice-overs [...] both reveal and conceal the filmmaker. [..] [This] is achieved by giving the primary voice-over to her father, in which Polley then features only in the third person and, very interestingly, sometimes in the second person. When the 'I' of the filmmaker does speak in voice-over in Stories We Tell, Polley is not doing so directly but rather creates a temporal and modal buffer by reading emails she wrote in the past."
-- Sarah Dillon
Dillon, Sarah. Deconstruction, Feminism, Film. Edinburgh: Edinburgh University Press, 2018. (pp. 116-117)