You never have to worry about Ceolag altering anything. The story will always go the way he planned.
Going to be honest, even I tried to tone down on both jokes and serious discussion regarding Kaija (can't resist sometimes to make a small jab) because of worrying it might, even slightly, affect the way Ceolag progresses story.
Sure, I hate her, but at the same time, Ceolag has done wonders to show MC can stand on his own feet, argument his case properly and express his dislike (if going down that route).
Problem is, so far rest of the girls simply haven't done that much to warrant some deep discussion.
There was a bit of it, yes, but currently it's mostly just "straight-line".
Granted, what did Fiona do in the past, what is she, who exactly is her family, what will be consequences of telling Elea to investigate Neverwhere more, all of those are interesting, but we're not there yet.
So it keeps circling back to Kaija, and I don't know what more I can say about her that I didn't say somewhere around page 20-50, when 2nd update came out.
Side comment, people, ignore button is there for a reason. Use it. I have few people from this very thread on my ignore list. Frequent posters. Someone annoys you, use ignore.
EDIT: And to conclude, Kaija is most interesting character by far. Different person based on which route is taken, amazingly written, interesting, conflicted in her feelings (love path) and well worth exploring. Just wish it wasn't always same few people exploring her.
I'd genuinely love to be able to hide 50% of this thread from new guys, just to see what they would say about her if some of us weren't here.