They haven’t explained it yet other then the fact she wants author Fiona to suffer we know nothing of her plans
oh! that's reassuring to hear because I thought I missed out on some details
If I'm not wrong, this whole story maybe re-starts or something similar after og fiona had fallen dark(? I really don't remember the proper terms rn) because of that red hair guy. Fiona didn't like the current fiona because she tried her best but was abandoned by everyone, while this fiona is living her life happily loved by others.
This is eating me up bad... I know Fiona is named to be the "author" but i'm still a bit confused. She had temporary amnesia due to the attack of the original Fiona. I might need to reread to understand it better, but if someone can be kind enough to explain why the original Fiona wasn't able to reclaim her entity and ended up beside that psychotic guy in the last panel.