Since we seem to be looking for appropriate hair styles to match Claymores this might be what Miria's hair looks like... though it is just a guess. I thought of looking for a spikey haired punk, but those searches were rather fruitless. I figured this hair is spikey and while it does not look exactly like her style could work in a live action. Miria's hair is hard for me to imagine looking the way it does unless it is just a very poorly done layering job.
Clare's is much easier to find as I believe her hairstyle is called a chopped bob.
Edit: Hey! I may have found a style that matches Miria more. It is called a Razor Hair cut and it
does involve lots of layering. These pics are of the cut, not so much matching Miria. Though I do like the hair Caprice has as it seems so much more unique... Though I don't know how much it would match Miria's character in the story. We'd have to talk to the director.