I agree with your diagnosis, though it’s more commonly referred to these days as “Bat***t Crazy Syndrome.”
***********************************************
In addition to being both cruel and crazy, she may also be looking for a reality show for she and her children. In one of the stories on the case she had her son watch some reality show apparently starring a “transgender” teen. She told her son that he was like the “transgender” star of that show. I strongly suspect she has reality show money and fame on her mind.
More likely, given that it appears that the boy is not biologically hers, and she’s in a divorce dispute with his father, she wants to destroy not only her husband but his son.