In bengali version, the elder sister was cunning and she dominated Kunal's character and cunningly entered into Kunal's house and even won the trust of Kunal's father. After her marriage she had her own story, and didn't interfere much in lead pair's life.
Here Manushi appears like a clown and follows Kunal's instruction.She doesn't have her own personality and it appears she is going to mess up with lead pair's life. Audience get tired of these cringy third angles.
Hoshiyar trapped Masoom in his fake love. Masoom's family didn't approve of the marriage, but they took her when she became pregnant and Hoshiyar didn't had any financial support