I think even Nirmala has acted a bit selfish here. Why didn't she tell Aradhana that Shailendra agreed to seek forgiveness only when he found out about the will? Before that he was adamant about not asking for forgiveness. I bet if Aradhana knew the real reason, she would hate Shailendra as much as we all hate him😡
I guess the creatives are trying to show how much a woman tolerates and endures before she is forced to rebel- in this case an illegitimate affair with another man