Re: A persoal loan for a pensioner
Go to a solicitor (no, seriously) tell them what the story is, instruct them to act on your behalf in the sale of the property and instruct them to give an undertaking to the bank to discharge the loan and interest from the proceeds of sale.
The solicitor may be able to get a loan through their own bank (in your name). Give the solicitors your deeds (go to a mid sized firm in the current circumstances), instruct estate agents though if you want the work done first don't put the house on the market.
Has the inheritance gone through probate?
It should be possible to do something about it.