I agree - a good psychiatrist will pick up on ex gf saying he was "extreme" - he turned into the perfect bf after that - (kind and giving flowers) - very sociopath. Probably didn't act and push the issue because she was living there with her children. They became roommates.
Then he targeted women that were vulnerable, (foster care, children removed) who he thought would have fewer connections and fewer resources.
On the "extreme" note - serial killers become more and more extreme to reach the desired level of sexual satisfaction. A worthy psychiatrist could speak to that.
I am so happy that Laura's family & friends never gave up trying to bring her home! Amongst the misery they're going thru, I sincerely hope they realize they spared many women the same fate as Laura.
I still think there are many more women he has killed. These were not the first! JMO