Accepted that Bani is her best friend and sister and what not but seriously. If I were in Rajji's position and a girl who I know is my husband's crush, to the extent that he will do anything for her, comes running to my house early in the morning demanding to talk to him privately and then calls him wanting to talk to him alone, I would be really hurt and suspicious as to what s going on. Not to mention the day they came back late after going to the city (tyre puncture episode). And soon enough Rajji will come to know that Sohum is taking Bani to Delhi though he told her only that he has work in Delhi.