Jessica Fletcher does almost always work with law enforcement (at least in the 80s there was no other concept of a path towards justice against murderers) but the other good thing about cozies is one of the best: the social othering of Little Old Ladies to the detriment of the establishment

@libbycudmore.bsky.social summed up that Private Investigators are White Knights, but I think we can relatedly compare Town Dowager cozy sleuths as medieval, all-seeing witches