@Inna22 Well, it would seem to be totally outside of the Covid EC policy. Yeah, she booked before March 14, but that was supposed to be for bookings commencing by April 14, 2020. If she rescheduled, it doesn't seem like it should apply.
But who wants to waste their time dealing with CS? I just hope you can rebook the dates. I'd be very tempted to write her a scathing message. Very professional, of course, but I know you're good at sardonic and could probably pull it off nicely 🙂