Catalina Ituralde is the protagonist of the novel that bears her name, “Catalina.” In the summer before her senior year of college, she’s working as an intern at a prestigious literary magazine, and come fall she’ll be back at Harvard to plot her future. But, contrary to a life of comfort that this scenario suggests, Catalina’s situation is complicated and uncertain: she’s an undocumented immigrant, raised in Queens by her grandparents, and after graduation she might not have the privilege of choosing what job she takes. “Catalina” is the second book by Karla Cornejo Villavicencio, who first gained attention with the essay “I’m an Illegal Immigrant at Harvard,” published anonymously in the Daily Beast; her first book, “The Undocumented Americans,” was a finalist for the National Book Award. Though Villavicencio has since become an American citizen, “There’s this Latin American paranoia that comes from my parents, [who] grew up under a dictatorship,” she tells David Remnick. “I’ve heard all of these stories . . . and then there’s also being undocumented here, where the idea that I could disappear at any time, my parents could disappear at any time – I don’t think that I’m necessarily capable of feeling that kind of permanence.”