Eferum Series by Andrea K. Höst

When a motionless woman dressed in white appears in the village of Falk, Kendall Stockton has no inkling that the strange apparition will soon leave her homeless, and tangled in the affairs of mages and monsters. For the white figure is the first sign of a spell which will shatter cities, and make the caster as powerful as the gods. Saved by a stranger who claims her goal is to stop the woman, Kendall is torn between admiring the mage Rennyn Claire's strength, and doubting her methods... moreWhen a motionless woman dressed in white appears in the village of Falk, Kendall Stockton has no inkling that the strange apparition will soon leave her homeless, and tangled in the affairs of mages and monsters. For the white figure is the first sign of a spell which will shatter cities, and make the caster as powerful as the gods. Saved by a stranger who claims her goal is to stop the woman, Kendall is torn between admiring the mage Rennyn Claire's strength, and doubting her methods. What is Rennyn willing to do to win? Do the best of intentions justify pragmatic sacrifice, or is Rennyn Claire no better than the monster she is trying to stop? less