Mai says to Ichcha, Ichcha is not even mourning for her child going around carrying someone else's child...Mai goes on to say Ichcha must have done some "paap" that has caused everyone to suffer that Veecha lost their child
Ichcha is connecting Mai's word "paap" to her trying to leave Mukta with tappu...as a repentence she thinks not having her own child and giving all her love to Mukta will make things better...
Ichcha probably is going through a depression phase and trying to deal with her loss...
Veer by asking her to be positive is good tho' they should have a child together down the road...going with flow with Ichcha is the right thing to do for now when Ichcha recovers may be sense will prevail with her that Veecha have a responsibility to the family also...sense will prevail they can have their own child and adopt and give kids same love/affection
May be a talk with Jogi or Ammo would help things for Ichcha...Ichcha needs to ventilate with Jogi