Nothing you can do but move. It is highy likely she does not want to officially declare your tenancy, the incme from rent, or both.
I have rented a house in Bangkok for nearly 20 years. The landlord categorically refuses to provide any supporting doumentation, I dont even have a rental contract. I can't say it has ever really been an issue, (though i have needed to be creative over the years getting internet and similar services) and the frozen rent agreement makes the situation work for me.