I agree with you. It was very stupid for Zoya to go there without telling Asad considering the situation of both families.I think this is gonna cause some MU between Asya as well for Zoya lying and if Dilshad gets insulted too then he is gonna shout at Zoya before heading off to blast at Razia and the others.
It won't be a misunderstanding as much as him being unbelievably mad that she got herself humiliated by those ppl and her sneaking off to the engagement. He'll defi yell about it but its probably gonna be scream at those pigs first and then yell at mom and future wife in the car for being silly enuf to think that rashids family wouldn't be insulting.