Free SAT Practice Question

The following text is adapted from a contemporary short story. Nora is visiting a city archive to listen to a digitized wax-cylinder recording said to contain her grandmother's voice.

Nora settled the padded headphones over her ears, and a faint hiss rushed in like wind at a doorframe. Then a quavering contralto rose—only a few syllables, a laugh edged with breath. Nora's hand flew to her mouth. Heat climbed her cheeks, and an unexpected lightness loosened her shoulders, as if a knot had fallen away. The archivist was saying something beside her, pointing at a waveform on the screen, but Nora did not follow the words. She leaned closer to the sound, hearing a timbre she knew and didn't, the shape of a person she had missed before she ever met.

According to the text, what is true about Nora?