I think it is Fateh's dream sequence that Jasu will stop the marriage. Jasmine is too stubborn to come to sense so easily. I was expecting her to regret after some time may be 2-3 months once she realize how much Tejo is loved and respected by Fateh and his family. Also, that will give time for. Fateh and Tejo to be bit more comfortable with each other and Fateh to notice difference between two sisters. However, looking at precap, seems like she is miserable by the time of vidaai only.