From The MoneySavingExpert's website:
I was told to buy mortgage PPI, was it mis-sold?
Yes, but mortgage PPI wasn't as commonly mis-sold, so it's less of an issue. Remember, good PPI protects your mortgage repayments in the event of accident, sickness or unemployment
http://www.moneysavingexpert.com/reclaim/ppi-loan-insurance
We still don't know if the mortgage was in JennyKenny's name, nor if her husband was self-employed.
She says herself that her late husband dealt with all the financial affairs so I don't really know how she can claim it was mis-sold if she knows none of the facts.