"I'm the criminal I presume?"

"You said it not me," Ampere responded with a grin full of teeth. She couldn't keep the edge of excitement from her voice, but she doubted she was the only one with the way Circe's tail was wagging back and forth like a rowdy puppy dog just begging for slaughter. All sense of manners, for what little Ampere had were worth, were thrown to the wayside as the inevitable built between them, unspoken but no less real. Ampere's muscles were already growing taut with anticipation, the world crumbling away bit by bit until only Circe remained on a scrap of earth before her, tall and lithe and glinting a dangerous grey like metal in the sun.

She'll be fast, and long Ampere noticed, her wings pressing tightly against her backside.
She wears scars like experience, Ampere recognized too, her gaze flickering over her fresh opponent with gusto.
The confidence in the young mare wavered a bit, realizing she had no major advantage over this mare like she did so many others. In the world there were giants limbering about like they owned everything, but all it ever took was a speedy bird whipping around their head to confuse them and send them crashing down. Talented or not she'd only ever needed her swift acrobatics and impassioned soul to win, but she didn't face a giant today. She faced a steel sword honed in battle and blood.

...She wears scars, like a criminal, some wiser part of Ampere spoke up, trying to re-instill confidence. Her blade still cannot fly.

Ampere exhaled just as Circe delivered her taunt, and then she was in motion.

Her hooves scuffed against the summer-touched grass, better able to grip the terrain for its lack of moisture when it would have been too supple and slick in spring, though now it would be more jarring, it still yielded, crumbling under toe as she grappled with it. Circe stood not far beyond her and the horn's tip earlier than that so Ampere knew she'd have to act fast. If she could not merely rely on her physical traits to win today, then she'd have to partake in some mental ones as well. They were not her strong suit, but maybe Circe was just as lacking.
One can hope.

Ampere's left wing shot out suddenly, directed towards Circe's head in an attempt to lure her attention, and her horn, if the mare intended to be so violent. Ampere had no intentions of maiming the mother, but she would not risk her own life with wrong assumptions of kindness on the part of her opponent. She'd let Circe show her whether she was criminal or vigilante, and a wing was the best way to do it. With most of the appendage made up of hollow shafts of feathers and thin cords of muscle, sinew and bone, there was a poor likelihood of anything dire being struck even while it provided a great surface area in which to aim. They weren't playing pin the unicorn horn on the pegasus wing anyway, the wing wouldn't be out there forever and soon enough Circe would have something else to notice. Ampere's body was still in motion after all, driving towards her right side, Circe's left, in a bid to nip her neck. Ampere's neck extended outward to give her reach, though she did have to reach with Circe standing several hands above her.

Ampere's original plan was to spin her ass around in the same moment, delivering her just at Circe's left side and facing the same way, but now her balance was all fucked and if anything her left wing would probably karate chop Circe in the throat or chest as she tried to yank it back against her side.

This was not just a game any more, it was the game. Win or lose were the only rules life abided by.
Ampere wasn't sure what side she'd end up on, but at least she was playing.