No, the maid did not have any relation with Dr Dalal's husband. The maid's boyfriend had died leaving her 3 months pregnant and she had wanted to abort when Dr Dalal had advised her against it. As she herself did not have any kids, she decided to adopt the child.
sia comes to know that archana is not her biological mother because she meets archana's ex-husband who tells her that archana took her from some street in london
next question- which award did anand get?
hint: he refused this award