What was the power of Freya?

Freja is the Godess of love and fertility. Due to Lokes never ending plots and trickery she was forced to make two kings fight to the death, which escalated to over 20 minor kings in Sweden started to fight, those who fell, known as Einhärjar, were welcomed in Valhalla, but feeling guilt over it, from then she takes half the fallen warriors to live in Folkvang (warriors shelter) with her.