Thank you for your question
My name is Clare
I shall do my best to help you but I need some further information firstI am not certain that I understood what it is that you want to know - could you explain a little more clearly what you wish to achieve please.
Does your wife wish you to live with her?
There is no reason why you should not live with your wife if that is both what you want.
There is no legal reason why you should not do so
Who has questioned her?
Is that because you have asked to be added to the tenancy?
Then simply withdraw that request - that is the cause of the problem.
Leave the Tenancy in her sole name and you can simply live there
You are most welcome