In seeking to deal with the rampant portals created by [[Thomas]] in his damaged emotional state, she encountered the [[Soul Reader (Book)]] on a world destroyed by the [[Darkness Entity]]. The [[Soul Reader (Book)]] was of an unknown design to her, and given her background in advanced science and technology, suggests that it was not produced by [[The First World]].
In an encounter with the [[Regret Demon]], Cristina identified that something of value is contained within the dirt stuck to her shoes from a universe she traveled through. It is unknown what this valuable substance might consist of, or why the [[Regret Demon]] desired it.
During her exploration of a [[Portal hub facility]] while working with [[Heath]], Cristina was transported to [[The First World]], which resulted in her capture and incarceration in [[Teskoy Prison]].