So, we could all tie up their future reservations so long as we cancel and document our cancellation at least 72 hours before the reservation time. That is a bit more involved protesting but would really screw them up to have their placed booked out for the next several months, then see every one of those reservations canceled as they approach.
And she gets charged a service fee for each canceled reservation. So make one for next month, cancel it the week before. Heck, even tomorrow or next week.