Problems with filming

In the past two weeks i have encountered a huge problem in my filming process as the actress in my film has fallen ill and has been ill for quite some time, meaning that filming days i've had scheduled have had to be cancelled, leaving me with the problem of no longer being able to film parts of my video which feature the actress present in other parts of the video. To deal with this i will have to change my plans for large parts of my video meaning that it will now be very different to my original vision for the video, however some parts of film which were collected before my actress became ill will still be present in the video.