I am the owner of http://www.managing-stress.org which helps people who are suffering and dealing with the effects of stress on a daily basis.
I also manage http://www.stopconstantfatigue.org which offers help to those people who are always tired .
I think you need to look into buying a property so that her family wil be happy. If you love her, together you can make an arrangement to buy a property so her family will be happy.
Sit down with her father and tell him that you love his daughter. Ask what you can do to make him happy for you to be with his daughter. Be humble.
If you love her, fight for her.