These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Devon is perhaps the exception as she seems to go out of her way to be catty with everyone that wrongs her or that she considers a threat of some sort. Everyone else she seems to consider useful and just manipulates them.