The consensus response to last week's Yoko post is sensible enough, but nonetheless I didn't see it coming: yes, this happens with the genders reversed, and often it's a sign of an abusive relationship. The guy discredits people in her support system one by one, excising from her life anyone who might pose an obstacle to him. This is not at all inconsistent with my Yokos. Although physical abuse isn't a factor, emotional abuse is, and the hunting of the support system is too familiar. People perceived as threats are managed out.
Next question: male or female, do your Yokos have any friends of their own? Mine don't. Socially as with all else, they bring nothing to the table.