It is two mentally ill people (the blog states that both of them have been sectioned and had inpatient mental health treatment). One of whom has convictions for DV, and whatever the rambling about an arrest for rape in his blog is about.
And this American woman, who is presumably also mentally ill or she wouldn’t have flown halfway around the world to join them living in a gazebo in Jedburgh.
So like Constance Martin except no babies yet (the seven existing children are already safely in care). Probably inspired by that case, sadly.