Fallen Meteor

Freya is an astro-geologist. Her job is to collect samples from the space rocks and other debris which circle the gas giant of her system. But something went awry on her last trip. She's lost chunks of her memory, has gaping holes where she remembers nothing.
Fearing contagion her government wants her captured and quarantined. Her scientific mentors want her cooperation in analyzing the contagion, but that too seems to involve confinement. She's hearing voices that aren't there, and doing things that make no sense. Impossible things are happening to her. Is she going mad, or is the contagion gradually taking over her mind? She desperately needs answers, but has no one to rely on except herself, and, perhaps, the voice in her head.