I don't get Raman, he lets Shagun destroy Pihu every day while Ishita telling Pihu truth now will save them now and in future but its Ishita fault. Pihu hates Raman and Ishita so much like as if they are her personal enemy because of Shagun lies so Raman stupidity to not tell the truth is alarming and blaming Ishita.
Ruhi and Adi both know Shagun are their real mum but they see Ishita as their real mum. Pihu only likes Shagun as she has been taught badly by her what is right and wrong and who is evil and she is brainwashed so much she goes to any extent to be on Shagun side and against Ishita and Raman.