Sessions are strictly by appointment, and can be arranged either via email or telephone. I respond to all emails personally but, if I am busy, my telephone may be answered by my receptionist or maid.
I always recommend booking at least 24 hours in advance, as befits a world class Dominatrix, I am very often fully booked. You can telephone to arrange a session on the same day but I cannot guarantee there will be anything available, occasionally there may be due to cancellations. I will not cut another slaves session short just to fit you in.