I don't think this time Bani will let her just walk and take Jai away. Bani has always called out Pia's mistakes, even though she has forgiven them, she has always called them out and tried to prevent Pia from committing mistakes. The only problem is that Bani is divinely forgiving, which I feel Pia takes advantage of that she forgives easily, but I think if Pia tries something against her marriage Bani will not just sit and take, unless she thinks that Jai still loves Pia.