Re: > "Having been made redundant in 2017"
"I'm amazed it took them 2 years to get rid of her."
I'm not. I've run into this kind of employee before and what happens is that you have to document EVERYTHING and ensure every I is dotted, T crossed and then double chcked before you get rid of them, because they may well be grossly incompetent but they're also bush lawyers and they're frequently better at the latter than the work they're supposed to be doing.
These are the people who will acively look for/find a loophole in Covid rules to suit their personal agendas and bollocks to the health&safety of anyone around them. It's entirely me me me.