Originally posted by: Allbut1
I am sure Maansi was just brought back to add fuel to the fire about Aarti's misconceptions and fears about getting married again, they needed someone like Maansi to come in and encourage her fears so that they can show being the complete opposite of it later, which will become a catalyst in both of them learning to respect and become comfortable with each other. Characters like Maansi are needed to add a plot point for the future and that's exactly what she has been doing, and I am sure that once the Punar Vivah has taken place we won't be seeing much of her at all and just like her the Dubey's will take a backseat as well when the story shifts to Aarti and Yash's life post marriage!
So keep calm, you won't have to deal with her for much longer :)