Yes

You do feel like meeting her challenge, and is sure that with your powers and the gifts of the All Mother you can make short work of her. You create a Psychic spear and feint an attack against her.

The Goddess duck from your attack, and you feel a pang of pain in your brain as her magical blade bats away your mental weapon. You decide to fight more cautiously, levitating a chunk of ice to serve as shields while Sif press her momentary advantage, her sword cuts your clothes time and again but fail to break your skin.

You call forth the winds in this icy terrain, but is unprepared for the maelstrom that answers your call. You are both tossed away, you are hit hard against the wall, while Sif gracefully lands ready to lunge at you. Again her sword is deflected by the enchantments protecting your body, but you start feeling the impact of her repeated assaults. Could it be they are already running thin?

The weather is reflecting your emotions, making it even harder to concentrate. you call forth blasts of energy, but miss the nimble target by wide margins, causing avalanches in the icy peaks far away. The flat of her blade slaps your face, enraging you even further. You muster all your strength for one mental blast, but somehow the enchanted blade again deflects your attack harmlessly.

"Enough of this crap" you had enough, you are almost in the middle of a hurricane when you lunge at her. Her point blade hits your throat, but you already knew it would deflect the blunt of her strike. You grab her tight and waist in a clumsy grapple, making you both roll in the snow as her supple body shifts in your grasp, seemly effortlessly turning your strength against you, and locking you in an arm lock with her legs.

"Submit mortal, you fought valiantly, but this battle is mine" she boasts, and you roar in outrage. While you normally know that raw power isnt all that determinant in a fight, it still upsets you how easily she handled all your attacks. You try to concentrate on her mind, but her willpower is an impregnable fortress against your attacks. You dont give up.

You **** your arm, trusting your strength and ignoring the growing pain, and eventually you feel your shoulder giving in. She lets you go at the sound of muscle snapping and her look is horrified when she sees you healing back. You call forth another energy blast, but she seemly vanishes when it was about to hit her, instead it hits the icy mountain behind her. But unlike the previous avalanches, this one is very close and the last thing you hear is Brunhilde's warning.

Your fear and rage made the situation much worse. Earthquakes and volcanic eruptions come forth as this mystical land more easily answer your powers, and you are buried under an alloy of icy steel and molten rock. Your invulnerable body protects you from most of the damage, but you have no idea where is up or down, and run out of air before you can reach the surface.

Apparently there is such a thing as too much power. You died.