It's difficult to hold it off, to keep his flame from melting all of her ice. It is a battle of wills, this, and she knows that she is going to lose because he has more power than she does. Still, it is an important exercise to try and hone her strength and that is why she engages him.

"It feels as if it takes all my strength to keep the ice there," she says, voice strained a little. "I am weaker than you are so my focus must be stronger."