If there is something to be learned from the words people pick for their passwords and proxies, then Lena Dunham’s choice of aliases – pseudonyms that, as a public person, she has used over the years to conceal her identity when checking into rehab or ordering room service – give us a tiny glimpse into the writer and director’s self-image. Among her staples, “Lauri Reynolds” (after her mum, Laurie, with whom she is strikingly close); “Rose O’Neill” (after the American millionaire illustrator, who lost her fortune to burnout and hangers-on); and my favourite, “Renata Halpern”, an alias Dunham shares with…