Because they are stretching the story beyond the limits of possibility and tolerability. It's getting REALLY ridiculous now. The way Kajal is controlling Raunak's mother like a puppet is just beyond believable. Even if Kajal tells her to kill Raunak wshe probably will do that and then say, "I did it to save Raunak!". Utter nonsense!
There are a million ways in which Kajal's storyline could have (should have) already ended but the writers are just keeping it going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and going and