In conversation, Ms. Del Rey isn’t the low-voiced chanteuse of songs like “Video Games” or “Blue Jeans”; her voice has a girlish, soprano lilt, punctuated with giggles. Wearing a blue mini-dress and clear sandals that revealed toenails painted a pearly peach, she sat on her couch here, sipping coffee and smoking through a pack of cigarettes, under a painting of cherubic angels. She showed off a recent tattoo on her right arm: “Whitman Nabokov,” two authors she has quoted in songs. She had just returned to Los Angeles to finish her North American tour, with a show at the Shrine Auditorium and Expo Hall.