The person in the "prosecutor" role needs to take the necessary steps to end this type relationship since the "prosecutor" probably created this "victim prosecutor" role. I'm sure the "victim" would appreciate it tremendously.
Also, if the victim is a smart person and a good person and realizes that maybe he/she, innocent as it could have been, possibly unknowingly helped to create this role, will help to end it if both parties can acknowledge that they are sorry for what happened to create this role. It can be easy if both people want it!!!