My personal view is I would tell her to get lost.
Do remember that I can only give you my opinion.
Another lawyer may have a different opinion. Litigation needs at least 2 parties and neither goes to court expecting to lose.
Nonetheless, one of them does, even though they have been told by their respective legal advisers that they have a good chance of success.
If there was a black-and-white answer to every legal problem there would be no need for anything to ever proceed to court.
She wouldn’t be getting anything out of me without a fight that she wants to take it to court, let her and then you will have the opportunity of defending her action on the basis that she agreed one week notice to get rid of you.
Legally, a lot depends on the terms of the contract that you have with class if, for example, it says that this is the whole agreement, then you can’t vary it except by terminating the existing one and then doing a new one.
If it was done by deed then you could have a deed of variation varying it although a lot depends on the terms of the contract as I said earlier.
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