Hi I have the following question : My Sister is the trustee to some money my mother left me when she passed I have asked my sister to pay off my mortgage with the money as it will just cover it and wipe out my debt completely (she says she will agree if I can guarantee that she will not place herself in a legally bad position, I agree) how can I go about this would I sign a statutory declaration that I will not sue her in the future or would I need to have a contract written up to this affect? seems like an awful lot of trouble and wasted money as I would not be taking legal action against her in the future for paying off my home loan, but she "needs a guarantee" and I am sure a statutory declaration would be enough maybe it isn't, hence the question.