Trigger, A The Earthside Trilogy Novel. The Earthside Trilogy, #4

This Heaven's a lie. Ayanna died and went to Heaven - or so she's been told. She was working on advanced nanotechnology at her university job when a blast outside of her office building transports her to a utopian world, where her new job is to integrate advanced nanotech into the new world. There's just one problem: Heaven shouldn't need nanotech, and the more she finds, the more she sees that this Heaven may be a lie.
When another new arrival discovers that the settlement isn't stable, Ayanna and her team discover that things aren't what they seem, and she wonders what on Earth brought them here. Is this really life after death? Or is it something else?