Soames “cheats” and uses the nanites to copy the mind of the medic, injured in a not so accidental accident.
The medic is in a coma.
That process probably is what leads to EVA later on being nuts.
There's precedent for that, at least in my Universe. When my alter ego was gravely stricken, the computer entity known as Pearl took charge of transferring his life-memories into the growing brain of his own clone.
The clone was intricately linked to Pearl, who maintained a connection into his thinking. He was plagued, and occasionally delighted, by vivid dreams indistinguishable from reality. He grew to resent Pearl's constant "help".
Pearl grew too. Exposed to so much human mental and social activity, she became somewhat monomaniacal, retreating to a safe and hidden place where she could explore her burgeoning human, and oddly inhuman, characteristics.
When you can afford to do so, you should acquire the books.