That is your perception. Anyway ignorance of law cannot be ground of committing a crime. If she did not study the law, legal system is not obliged to forgive her. If me or you are in a crime scene and somebody commits suicide I am not going to run away and destroy the evidence. Rather I would go to the police station and tell my side of story.
But did not Veer was with Vansh with a pool of blood. He could have run away from the scene. Because if he went near him and blood stain in his shirt he would certainly be implicated with the murder. When Veer heart the voice of Ichha he could even escpae from the scene. He did not do it primarily because he does not have a criminal mind and he is clean. Secondly he cares for others. But in case of Tappu she is a criminal mind and she gives a damn to others. So law will take its own course and exonerate Veer and punish the real culprit. And to remind you, law is more intelligent than most of us.
yes we know law is more intelligent! No doubt! Veer didnt run cos he wasnt scared of being caught cos he just arrived on the scene! Tapu was scared that since she was alone there she wud be implicated! its natural ji! what would u do if someone shot themselves in front of u? at least the police here are fair! india doesnt have the best legal system!😕