"I was quite terrified. We weren't looking forward to it really. The thing is, it could potentially sound like we are putting each other down but we were both in the same boat. It was a horrible thing to have to do because we are just like brother and sister, so it's really weird," Contactmusic quoted Watson, as saying.
"He (director David Yates) did spring it on us. We didn't really know. We had problems with laughing - we kept laughing. We would get there, and we just couldn't take it seriously. It was awful. But anyway, it's done now, and it was good. We have watched the playback and it's good," she added.