If one were to interpret with a fictional lens, she comes from a superhero setting.
Her civilization is still bound to Earth—do their humans come from an Earth?—their planet of origin, and the world is not entirely at peace, with about two hundred separate polities, of which two to ten have major global influence and power projection, depending on how you count. Major wars are uncommon, but there are political tensions. Trade is globalized and most of the world's economies are industrialized; they have handheld computers, the Internet (she tries to push as much of the concept as possible), robotics, ground and air transport but no reproducible artificial minds, commercially viable interplanetary travel.
That's not the important part.
On her world, when people suffer extreme traumatic experiences, they have a chance of gaining superpowers: idiosyncratic abilitites that defy physics as they understand it. In many places, including Rebecca's nation of origin, they tend to fashion themselves as superheroes or supervillains. In some other nations, they simply style themselves as warlords and fight over territory, or they play more subtle games of influence in the shadows, or so on. Rebecca was a superhero, one of the most prominent ones in her nation, before she came here. Some people with superpowers have the ability to create technology far more advanced than planetary standard, but which is almost impossible to reproduce for a medley of discovered reasons which still do not fully explain the phenomenon.
That's still not the important part.
(From her emotions, Rebecca is clearly steeling herself.)