Glass Cage by Emmy Chandler

“They’re organ donors. Your job is to keep them clean and in good shape, until they’re no longer needed.”
Convicted of petty theft, Katerina Mathern is sentenced to the prison planet Rhodon, zone twelve, where unresponsive convicts await the removal of organs they never agreed to donate. Kat is horrified by the ward full of comatose prisoners she’s required to attend, but she’s even more horrified to discover, when one gorgeous, unconscious man begins responding to her voice, that the patients are aware of every horrific thing that happens to them.
Newly convicted felon Beau Desmond wakes up paralyzed in a hospital bed, missing one of his kidneys—his rare blood type and perfect physical condition have put him in high demand in a for-profit organ trade run by the prison. Trapped in the cage of his own mind, he can only wait for the rest of his organs to be taken one at a time, until he hears Katerina’s cheerful chatter and falls hard for his beautiful caretaker.
When Kat realizes Beau can hear her, she becomes determined to get him on his feet and off the planet before the surgeon can cut anything else out of him. But now that she’s woken her sleeping beauty, their escape must be a team effort—especially once they discover the horrifying reason Kat was really sent to zone twelve…