Feeling like your home isn't yours due to other relatives

No of course not for all the above reasons don’t even consider it she can book a church hall like most others do or start of in her own home but NOT yours you can’t possible consider people trampling around in your home very unfair to even consider it Maybe she was just joking but just be prepared to say a big NO if it does drop up as a genuine question

No is a complete sentence. Just that.

As suedonim says it will invalidate your home Insurance also what happens about toilet facilities for her clients?
I wanted to start a business in my own home, gave it up as everything made our home into a ‘commercial property’ any excuse to wriggle out of a claim and get more money out of you.
The pitfalls are many!
Put your foot down with a firm hand.... and say No.

Say no, if you don't want it in your home.

There may well be house insurance and council change of use ramifications, too, if she's running a business.

Can you possibly just say no! You must talk it over with DH, but there will be times that you are both out, and will not want others to be in your house,.

Just say no! Or alternatively ask if you can watch the lessons and keep up a running commentary . She wil soon have no clients.

Sorry, no. would be the honest response. (Are you sure they werent joking about? ).