First electrolysis appt. tomorrow

Working with the knowledge that I'm looking to remove all my facial hair, my provider booked me for seventy, weekly 90-minute sessions. Is that a reasonable guess? In other words, does it fall within the normal range for people of all skin types, etc.? (She's never met me) To be honest, I'm not going to be able to go without shaving three days before my appointment every week for seventy weeks and so I'm hoping she's made a mistake.