Angelica, Anna, Olga. One wonders if all the women were immigrants. Urfan seems to be a true sadist, but it is easier to be sadistic towards more vulnerable women with less protection. Batool was born in UK. He might have been afraid of abusing her the way he used to abuse others. Plus, she is pretty aggressive herself. One has to just watch her statement in Pakistan to understand that she is not that much afraid of anything. So he turned his abuse towards Sara, and the more she grew, the worse it became. Batool was a kindred spirit to Urfan, and between the two, Sara’s life was worth nothing.