Karma and justice within the spiritual community seems to be a touchy subject for some. This isn't a post about how people are handling it wrong or to shame others for seeking justice through spell work. If that is part of your practice then do it. I can't speak from experience with that so I'll move on from that. For myself and my own practice I fully believe that karma catches up in the time and way that it needs to. There might be reasons as to why it hasn't shown up for the person in a time frame that seems fair.
It's said that karma is a neutral energy. It can be either good or bad and it won't only go after good or bad people. In my experience retaliation has only kept the karma cycle going. Something else I experienced is whenever there's a situation where karma happens, the person who was wronged is usually meant to be learning some sort of lesson. I can't think of one time where I was wronged where I didn't learn how to do better for myself. If I'm so focused on getting that person back, how will I focus on the lesson to keep that cycle from repeating?
I'm curious on your take with karma and your experience with it?