Last seen slaying  Climate Pledge Arena with Heart in November , Seattle rock hero Ann Wilson comes home this month to premiere her new documentary, “Ann Wilson — In My Voice.” Rather than simple screenings around the country, Wilson is taking a more personal approach to unveiling the new film, kicking off a nine-city tour in Seattle with a May 11 screening and live Q&A session at the Neptune Theatre, where Wilson and director Barbara Hall will take audience questions. The film chronicles Wilson’s journey from childhood through Heart’s rise to fame and beyond, casting Wilson’s life against the backdrop of evolving American culture. Ahead of the screening and Q&A, we caught up with Wilson to discuss the new doc, her life in rock ‘n’ roll and returning to the stage with Heart last year following cancer treatment. This conversation has been lightly edited for length and clarity. Tell me about the impetus for the documentary. How did this project get going?…