It's not really a case in that I felt pressured to not say anything (because I did), it's that she just kinda ignored what I had to say for some reason. I made a rebuttal here:
So, I do agree with glow in that this is the scummiest thing that Epona has said so far. I think it's common sense not to try and speculate on the Kingmaker's identity, whether she meant to or not, and I can see her making this comment after it being on her mind for a while. I do find it a little more jarring considering that Epona had no reason to point this out in the first place, as in the previous page she was just arguing with you.