i agree that in the drama there was some sort of justice shown, but then we have to remember that this is a story, a drama. people are going to continue to watch it if the storyline is good, and the ‘bad’ people are brought out, and everyone finds out. if the storyline did not show the tayee repenting for her mistake, there might not be all these people gushing about how good of a drama it is.
life and reality are different. the majority of the times, we see the wrong-doers getting away with what they have done, like you said. but at the end of the day, have faith that Allah will deal with these people. we may not see it happen in this life, but He surely will in the next.