It seems to be going to theme that to survive in the setting, becoming a psychopath is genuinely effective...
Curious definition of "effective", when it led to Shane's death and the Governor to lose an eye and an entire town. Psycho may be "effective", for a short time, but it seems to fail as a long-term strategy
I think Rick sees her going down the same road as Shane and the Governor in that respect.
Agreed.