Ah, that would be it. I'm not getting the talk about Inessa option with Xanthe.
Is anyone else having this problem? I'm curious if I should file a bug report or not.
Have you tried everything listed here in order?
Yes. Myrellion surface isn't charred, I can have sex with Inessa, I've talked about her family and her chastity belt, and I've met her sister Xanthe and talked about Inessa. I think though that the problem might be because I did all of this before the backer patch (Which I am one.) came up months ago and a second talk about Inessa to Xanthe isn't triggering. I can't think of why it doesn't show up when I've already done so and then just incase do it again and it doesn't happen.
Are you on the public version?