(The fact of the matter is that Ÿdra is from beyond the Outer Planes where the Outer Gods reside. It's as simple as that, there's no really beating that. Even if she isn't particularly "powerful," she is literally not subject to the normal laws of the world. They literally cannot apply. There's no extra steps of being a dimension hopper, she literally just couldn't care less about anything, and therefore cannot be "beaten." But there's also the fact that, being from beyond the Outer Planes, she is inherently more powerful. A dimension hopper's power resides in the laws of the world they're currently in. Just because Avhira's a shapeshifter who's been alive for quite a long time now doesn't mean that she can simultaneously be bound and not bound by the laws of the current universe. Normal physics, such as friction, gravity and other things like that, still have to apply to Avhira. Those are all bonds she can't escape, though with magic she can at least loosen them. Willpower, or determination, mean nothing when you're still earthbound. If willpower was all it took to defy and ignore the basic laws of everything, humans would have long ago figured that out and we would already be playing god.)