The rescuer stereotype creates the need of drama in order to reaffirm oneself once and again. If one doesn´t handle it with care, one becomes a martyr and starts an infernal cycle, because every martyr will find always new victims who need to be saved and through this process, victims turn into abusers, indeed some of them are true abusers in disguise.
When rescuers feel that they are becoming a martyr they have to correct the situation and think along different lines, because help and love can be given without suffering and extreme self-sacrifice. Often this takes time, but works.
However, when a rescuer meets an abuser, that´s another matter. They fight a bloody battle.