Ichha knew all along Tapasya is ghatiya insaan. In the special episode she says, "I know you better than your parents do." She knew how low Taps can fall.
Yet she forced Veer into a relationship with this woman. As she herself says, Veer is honest and likes truth. Then how could she do this to him? In fact, even after Veer leaves Tapasya, Ichha's whole energy is focused on somehow getting them back together. How could she never think that Veer would be miserable with someone like Tapasya? Today when it is a question of her marriage, she is ready to challenge Taps. So, for Ichha, the ritual of marriage is everything...feelings are nothing? Somehow I could not sympathize with her.