Irina Dvorovenko plays a Russian woman who finds herself depressed and lonely in the U.S. It’s a big difference from being a principal for American Ballet Theatre, but not so different from her youth: “Ms. Dvorovenko, born in 1973, grew up in Ukraine with dancer parents and studied gymnastics before entering ballet school at 10. For her, the show’s time period has brought back a flood of memories. Many have to do with hunting for food. (In the transcript of our interview, that word comes up 21 times.)”