I appreciate the fact that (I'm assuming) you've read Mia's story, but the fact that she says "yeah" after her sentences a lot is because she's british. It's a british colloquial and it's just the way they talk. I'm sorry if you don't like it, but that's just the way it is.
I'm sorry you don't like it =(
What don't you like though? You don't like Christian at all, the plot or something?
I'm just wondering, you don't have to read it anymore if you don't like it anymore.
But thank you for the story comment!
=D