Sadly you've got your fingers burned. If , mentally, you write it off, it will be a bonus when it is paid back. The lesson you have taken from this, quite rightly, is not to lend money in the future. It is not worth falling out about. If either you or any of them became seriously ill the money would pale into insignificance. The good news is you are all (hopefully) healthy. However, don't tell anyone you are writing it off mentally. It will just ease the pain for you to know you've done it. They will still be aware that they have a debt to settle. Giving your other daughter an equal sum sounds rather odd. You will be worse off than you are now. You could, if you have made a will, leave instructions for the inheritances to reflect the unpaid debt so that both daughters are treated fairly as one will have already have received part of her inheritance.