How should proceeds of house sale be shared?

My friend together with her 3 sisters inherited a beautiful house. One of her sisters lived there and neglected the property. it was in a bad state of repair. My friend and just one other sister paid for the repairs and refurbishment. They also paid the mortgage arrears and the other bills that were outstanding. If the repairs had not been done the house would have been sold at a lower price. Should the sister who caused the damage be made to pay out of her share of the proceeds. There are 4 sisters should they all benefit from the work done by 2 and if so how should the proceeds be shared fairly.
~~They are in the UK

The costs incurred by the 2 sisters should be repaid and the balance should be divided equally between the 4 sisters.