Retarded, considering her almighty raw strength, I suspect her skin def is no slouche. Even a rare slime on floor 1 acid spit would be only saliva to her.
Except now she has to use insane amounts of mana to protect her master. All that waste.
Basically the valkyrie has all her spells at lv 10 effect, and lv 10 consumption. Looks like she cannot use retroactively her lv1 versions of the same spell.