If you're talking about the way the posts appear physically, I believe that is characteristic of one of the Apple interfaces. Not certain, but I have seen many people's text messages and screen shots from their phones appear in that font. If you mean the way they are worded, yeah, they do seem too simplistic for someone who is allegedly a writer.
In an early post, someone said that Kala wished the ex-wife a happy Mother's Day via a FB comment. Can anyone confirm if the ex-wife does have a child, and if so, is the father the missing man, or another unconnected man?