marry w/o parents consent

Q. I am 19 years old and am in a relationship with a girl for the past two years. My partner and I are ready to get married. As she and I are still studying, we cannot live together. Her mother is aware of the relationship, but due to culture they are not willing for us to get married. They want us to wait until her turn comes. She has two elder sisters who are not married. Are we allowed to have our Nikah performed without the permission of her parents? She is also 19.
A. In the circumstances it is permissible to get married without the consent of the parents. The parents have forfeited their wilaayat by placing their daughter in a zina situation. It is not permissible for them to have sent their daughter to study at an institution which specializes in sin and haraam. The parents are immoral and anti-Islam. They have great concern for their culture, but are totally unmindful of Jahannam’s pathway they have paved for their daughter. They are able to tolerate zina, but not Nikah for the sake of their stupid custom and culture.