Alvie - i don't think anyone buys snow white as someone who's leader of the men (and i don't think that was even the aim), director even didn't want to put her through fighting practices, she was just getting the pieces and bits of it so it looks natural as she was in a prison her whole life and never even had the chance to fight. she's a sign of a light/life and that's why they go with her as their main motivation is to overthrow ravenna who destroyed everything. no joan of arc march persona. she's just someone who sparkled the idea of positivity (again, life) and from that perspective, i didn't even see a sparkle of mopeshow, just someone who held her head high despite of everything waiting for real moment to arrive (which is a motive that can easily be connected to "her army" and their wait too).
also, on a tehnical side of her acting - not one excessive blinking thing or lip biting thing happened for the first time ever, i think.