I just saw the new promo of the cliff scene, but I got a slightly different understanding of it ...
I got the impression that Kaajjal has come to the cliff in some dejection - and Dev is shaking here shoulders asking her not to do somethng drastic saying "Don't leave me etc" (in between we have the sid baba saying if she loves him his life will be saved etc) Then on the cliff Kajal replies " Pehla dhoka deh rahe ho and phir joote ummeed mat dena" or something like that - and then she says "Chod do mujhe" and pushes against him, but actually he falls ... and she shouts his name
I got the sure impression that Dev was trying to get Kaajjal not to do something drastic (like maybe jump off the cliff in her dejection?)! Not sure if anyone else also got that impression?