I had a big argument with future-in-laws

The poster does not seem like she is a Pakistani. Her future in-laws behavior support fully that because of that they are MORE wary... They might be concerned that if the person is from other culture - especially a girl - then how will she teach her kids to be a Pakistani? They do not want to lose their cultural value.

If the poster is a Pakistani in Spain - then let me know - so I know that the parents are not being indifferent to where the girl is from.