Valkyrie's Bargain

Set in 9th century Norway, Bo's skill at her her first 'test' leads to her selection by the Ash to be trained as a shieldmaiden, to serve in his army. Bo, unaligned, is not exactly thrilled about her selection, nor that she is to be trained by a Valkyrie, who unbeknownst to her, has another agenda entirely. Eventual Valkubus.