I don't think anyone here wants to invalidate your feeling pissed off that this woman assumed you owed her a life coaching session, because of the content of your blog. She assumed something that wasn't true. She expected you to offer her free advice, which is not what your blog is about anyway. I totally understand that.

That's the only reason I mentioned clarifying on your blog, to people, even if it's just one person, that you do not offer life coaching services. Then you won't have this kind of weird communication again from someone who reads your blog; they won't assume you offer life coaching b/c you clearly state that you don't. Does that make sense?