I'm trying to follow your reasoning her RN, can you explain more about what pattern you'd expect to see?
I agree the texts are a bit odd. But then again any kind of sexual texting in this context would be odd, as, more than likely, the person *doing* the texting would be.
If everything we know to be Terri is not one sided and is factual (which is impossible, IMO, because we mere mortals can not see multiple sides of the same story, as evinced here on a daily basis) then I would suspect she is a borderline.
Even for a borderline, those texts represent an abnormal obsession with sex, to the exclusion of anything else.
Borderlines tend to come in two distinct types of behavior, those who act "out", and those who act "in".
The obsession with sex, particularly in female borderlines comes from a desperate need for love and acceptance. They tend to be the ones who feel powerless and weak.
A big red flag for me was Terri's lack of response to MCs concern over the nasty article, asking if she was okay. Since a borderline trades sex for affection, any real affection offered will be capitalized on, the sex as a tool for feeling loved is no longer necessary. Not only did she not seem (from what little we could read) to bask in the offered sympathy, she went back to the sex.
So perhaps Terri is the kind of borderline that acts out, what you might term a rageaholic. Except thrill-seeking is typically more their game, and they do NOT fly under the radar.
If borderline is on the table based on what we know, these are the only two possibilities. Which means there is a third possibility, which is she's not a borderline at all. At which point I'm completely flummoxed, because the data to this point has done an excellent job of making her LOOK like a borderline.
My problem is, it's the rageaholic borderline that might have done something to Kyron. The weak, needy borderline isn't prone to violence in any way, shape or form, they see themselves as powerless, hence the needy, grasping, desperate behavior. But that neediness would have pounced all over MC offering sympathy. And Terri didn't.
Why?
If she's a rageaholic, it's statistically improbable that she would have made it to such an advanced age without doing significant jail time, or in some other way being unable to maintain any kind of functional public persona.