Yeah, I think that's fair to say — she's big, though not... sky-covering. I think Wrathion could have a shot against her, because he's smaller and likely faster, he can go for areas like joints, so on. So if he opens a wound through her scales and then someone else who's just sheer brute force pushes an attack in, that could be a really good combo. You could also just draw her away from the fortress and bait her to crash into the mountain — though even as I write this, my thinking is, "Is she so big she'd........................... lead to an earthquake..."