The hotchpotch rule seems to be about the fair division of assets in a will - just so we understand, was the loan greater than the amount you should have received as beneficiary under the will? As I read it, you are being asked to give back the money so it can be redistributed?
http://legal-dictiona...y.com/Hotchpotch+rule
My understanding (from my insurance days) of the seven years is for Gifts Inter Vivos, where if you had been given the money (not lent), then tax is payable if the donor dies within seven years of giving it.