taitzu52, I am adding a few notes to the deity Mokosh that will be relavent to you.
Mokosh as currently written is really a version of the god that was worshipped by Volhovy (clerics), not druids. She is a nature god, but a god of fertility and agricultre.
One interesting aspect of Mokosh in RL history was that she was often thought of as the human personification of another similar slavic god, Matushka Zemlia. Matushka Zemlia, however, never had a human form; rather, she was the earth itself.
So, in this campaign Druids will worship the side of Mokosh that is not human-personified, and much more centered on the earth itself. As such, your character may not be so familiar with the aspects of clerical/volhovy worship of Mokosh, so you are worshipping a different aspect of the same god, so to speak. Also, you dont' have any ranks in Knowledge (Religion) that might account for some knowledge of the volhovy worship of Mokosh.