Vilkas can't stand the new recruit. Miri is a tiny Breton mage, and the most she knows about combat is 'try to avoid the sharp end.' He has no idea why Kodlak gave her a trial instead of sending her to work in some lord's house, or to a nunnery. The Companions are a vaunted fighting guild of world renown, not some refuge for strays and charity cases - and in order to protect their biggest secret, it has to stay that way.
If it'll please Kodlak, Vilkas will be grudgingly polite to her...but that doesn't mean he has to like it.
(A story about facing fears, overcoming prejudices, and finding love in all of the strangest places.)