Leviathan Wakes (The Expanse, #1)

by James S.A. Corey

Holden started to answer and then stopped. She was right. Whenever he didn’t know what to do, he handed off to Naomi. He’d been doing it for years. She was smart, capable, usually unflappable. She’d become a crutch, and she’d been through all the same trauma he had. If he didn’t start paying attention, he’d break her, and he needed not to do that.