FRONT DOOR WONT OPEN IN AND OUTSIDE

[Delia Caribbean]

X5 2000 4.4i Gave someone a lift. She pulled the lever before I had unlocked the car. I used central locking to unlock it but although it activated, the door wouldn't open. I got out of the car to open from the outside, to find the
passenger had leaned over and was pulling the handle from the outside.
The lever outside has no tension and the door won't open from the inside or outside. How can I get the door opened?