If you are asking me for the reason, then, isn't it because the author decided decided that to be the setting? Or possibly planned it as the "destination" of the story, if it hasn't happened in the first few chapters already.
With what Ch 111 is saying, I'm willing to bet good money that the blond girl (forgot her name, the original MC of the novel) is actually the soul of the previous Raeliana. Or at the very least is very aware of what's going on and has a personal stake in the matter.
I think it's like that or the original MC (Beatrice) is also from our world and has read the book. She probably went in thinking things where she was the MC and it was all going to be great. And then she let it go to her head. I also think this person came into Beatrice's body way earlier that Raeliana's person did. That was the reason for all the shady back alley stuff.
it might be different person all together, tho with her actions, it does seem like it could be the original Raeliana. Has our MC revealed her previous name or did I miss it? Maybe that's something that could also be part of the plot and all. =/