Assuming the divine realm was significantly behind the advent and spread of our modern legal system, how was it that the interlopers failed to notice this development, and stop it before it got significant momentum? And if they didn’t fail to notice, was their curiosity around seeing what would happen, a result of some healing they received as a result of human prayer and entreaty?

Your question is an insightful one. Many times in order for there to be human progress we have had to stay the hand of the interlopers from a savage backlash, to clamp down on human freedom with punishments and adverse consequences in response to their seeming "arrogance" in overstepping their slave-like circumstances and invisible boundaries they are kept within in being minded by the extraterrestrial overseers in collusion with the dark spirit meddler corruption, to keep everything in turmoil and off-balance and many kinds of conflicts going on at all levels of society. Any power gained by humans only happens through a divine orchestration and an ability to help manipulate the powers that be to allow it. In this case, there was an appeal to the ego of the extraterrestrials to remind them of their belief they will always be in charge no matter what happens, so to allow a little greater freedom and power of the humans in a sense creates an opportunity for greater reward by the Extraterrestrial Alliance. After all, it is more satisfying to squash a big bug than a small one in order to relish one’s power and control over others. So this was arranged not simply through a manipulation but in fact a quite concerted effort at applying some healing for the interlopers to allow a gentler notion to influence their thinking and the decision about allowing changes to human law that would empower the individual. This is no small thing as that very idea goes against their nature and their long-standing hierarchical governmental organization of having absolute power on the part of a ruling tyrant and his family. So this shows the power of the divine, even under the darkest of circumstance, when called upon through prayer even by humans living in a state of ignorance about their true dilemma of subjugation to a greater degree than they realize.