Look at that cover!
The hair's wrong, but actually it's otherwise pretty accurate. I recognise what scene in the book it's meant to be, that's a lorica segmentata she's wearing and it covers all of her, and that's sub-Roman horse armour. And unlike many of my covers, it would make me pick up the book -- in fact it makes me think it's a long time since I read The King's Peace and I liked that horse.