You need to listen to the story
https://www.bbc.co.uk/sounds/play/p0l91m83
https://www.bbc.co.uk/news/articles/c4gegkxxlg3o
It sounds like she had 8 holiday lets in Blackpool. If a holiday let is not let for more than 70 nights a year, then it becomes classed as a second home.
Under a second home, she is liable for Council tax.
6 of these now seem liable for backdated council tax and she faces a £20,000 backdated tax bill.
Apparently landlords have been given a year to prepare.
She is worried about the tax bill and says that if she goes to the hospital, she hopes its bad news.
She also talks about famiiles who have come regularly to the lets.
But if the properties aren't being let for more than 70 nights a year, then they aren't very popular holiday lets - and should be occupied by people who need a home.
Maybe she should rent out some of the other properties to people who need a place to live in to pay the tax bill.
As an aside, it's also interesting to read the BBC article which does not mention the details of why a let might become liable for Council Tax payments.