Reading the message, Milo made a face that made Krista curious about what was going on. When she asked, Milo came clean, explaining from the beginning what happened in his meeting with Zenox, and told Krista about the Administrators and their plan. About how they wanted to "reset" the earth, most likely meaning they wanted to wipe out all the planet's lifeforms and restart from scratch.
Like Milo, Krista took some time to digest this news, it was a heavy thing to know about, the idea that there were beings controlling what happened in the universe behind the scenes was something that many people believed in. The idea of a god, but Milo had met one of these so called gods, and not only this, but the gods weren't merciful beings that wanted to save everyone, they simply saw life as some sort of game and when it got boring, they wiped the save file and started over.