Answer:
post conventional
Explanation:
Psychologist Lawrence Kohlberg wanted to move away from the content of an individual's moral premise and study how that moral developed in people. For him it didn't matter what was good or bad, it mattered how we got this idea of good or bad. Thus was born Kohlberg's theory of moral development, where the researcher came to the conclusion that moral development goes through three levels: pre-conventional, conventional and post-conventional.
According to this theory, Diane is at the post-conventional level, which is the level where democratically reached agreements are considered values are good, and it is up to the individual to determine right and wrong within the parameters of those values. Moreover, the principles of justice and ethics are part of conscience, being questions of individual choice within universal axiological principles, even against socially established laws and rules.