Obviously, if she has tested positive she cannot move until she tests negative and thereafter another 10 days so she can only delay it for a certain period of time. That’s the ethical situation, legally she actually has no right to stay in the property for the reasons I will give you below
If the carer didn’t pay rent, then she has no more than a lodger and you can actually simply walk out. Even if she did pay rent, she would still be excluded occupier and is only entitled to notice which is the same as how often she pays rent, monthly or weekly.
After that, you can then lock her out provided you give her her belongings back.
When you say a lodger, I assume that you live in the same property. If that’s the case, then you need to give him one month notice which does not necessarily have to be in writing but it’s better if it is.
Provided he shares some facilities, kitchen, bathroom, lounge, whatever, and his accommodation is not self-contained, then you do not need a court order to get him out and when the notice has expired, you can simply lock him out provided you give him his belongings back.
Here it is from the government website.
Thank you for letting me assist you with your legal question. I am glad that I was able to help.
I am not certain whether that answers the question for you or not, but I am happy to answer any specific points arising from this.
It will be my pleasure to help you again either further with this or any future questions you have