It wouldn't surprise me if that one weakness hasn't been dealt with in some way just to be challenging to the character. Every time I've ever had a player who thought that they had found something particularly special, I create something that said player has to struggle with just to keep it interesting for the player(s).<br/><br/>As it appears to be mainly rock, to hurt it too much means that she's going to get hot enough to hurt everyone in the room.