when madhuri got pregnant that time atul was already married to anu
So Madhuri n atul's relationship was illegitimate...so madhuri's father (n aparna's father in law) suggested everyone that now atul n anu should get divorced so that atul can marry madhuri but aao saheb refused it n because of aao saheb anu too refused to give Atul divorce...then Aparna's FIL said if u r not ready to accept my daughter then we also don't want ur daughter (aparna)in our house...that time aparna to cried in front of aao saheb n anu but aao saheb rejected her plea too n said i can feed my daughter n grand daughter but i won't let anu divorce atul...so maduri's family ( n aparna's in laws) left aparna n sampada in dekhmukh houseCoz madhuri was atul's second wife that's why their relationship was illegitimate n just because of that everyone calls kalyani Nazayaz ( illegitimate).