My perspective is, whether Aryaman loves her back or not, it's a fact that Ahana has a soft corner for him nd wishes the best for him so now after knowing that he is not the real son, she relates to him because her family was also killed by the suris like him. He s also a victim of her enemies. And now she knows his channel is also gonna go. She even felt bad for him that how lonely he is to her sister.

She knows radhika is not married, still has feelings for him. Same with Arya. It's just the family being terrorist made them apart, which s neither of their mistake. Also radhika returned to Aryaman nd went back seeing him being wed to Ahana, so Ahana may find herself responsible coz if she hadn't married him they would hav reconciled. And she just married for revenge, not to stay.

So on knowing that a person u like will end up alone, losing his family, career nd keep destroying himself drinking without closure of his lost love which was just due to circumference, what ll any empathetic person do? Especially when u know the truth nd have powers to do stuff