For a while now, after the talk with that author, Reeva realizes something crucial. He could change the whole story right from the second day that he was here. He knew that Onia would love to meet her sister more than anything else.
And he has Theia by his side all this time. He could have sent her home to her sister and changed the entire storyline.
At first, it was fear of the future that held him back from sending Theia back, but now the story has changed drastically from the original and frankly, it doesn't matter what he does anymore. What's more important is happiness, and sending Theia home could make him happy.
The Main character squad was never meant to leave Lmemore for the first act of the novel but here they are, in Tumidus. Reeva doubted that it was purely to pursue him since he was but a nobody who had just been charged as a heretic.