A woman borrowed a sum of money equivalent to one-third of the value of the house she bought. Both the…

A woman borrowed a sum of money equivalent to one-third of the value of the house she bought. Both the parties, lender and borrower, agreed that the borrower should return the money when she could afford it. However, the woman’s son gave the lender a check for the amount of the debt as surety. In the past four years, both parties died. Their respective heirs want to settle the matter. How should they go about it? Is it by way of relinquishing possession of one-third of the property to the lender’s inheritors or would the amount written in the check do?