Brunhild immediately rushed towards the location where Frey was fighting against the Goddess of Earth Sif. The two could be seen in a fierce battle but the only one heavily injured is Frey. She has yet to call upon the power of the Goddess Freyja but there is a reason why she cannot do so.
"Goddess Descent!" Frey shouted as a pillar of golden light came down from the sky to give her power.
What would have happened is that Frey should have gotten more power from the Goddess Freyja but the one she is fighting is the Goddess of Earth Sif. If there is one goddess that the Goddess Freyja is closed to on the Aesir side then it would be the Goddess of Earth Sif. It also means that both of them are aware of the divine energy that they have and it can lead to unexpected consequences.
