If it wasn't for her quick reactions provided to her by her elven heritage, Listia would have had little chance to avoid the swing that was sent her way so soon after his attack against her ally, meaning that the initial attack was likely a fake all along and she was his true target. Otherwise he'd have no chance of matching her speed, and even still he was just a tad slow with his timing, but just fast enough to be a major damper on her original plans. She could have traded death blows with him had she kept charging forward, getting into range before he could land his blow with his superior reach, but instinctively and with no time for decision making, she went for another option that could allow her to come out on top without sacrificing her own life so easily. 

She pushed off with her left leg to adjust her path forcefully to the right, his left (while still going forward as well thanks to her previous momentum), away from the direction his sword was incoming, but this alone wouldn't be enough to avoid him in time. She had no choice but to twist her body sideways to the left as she did so, causing the blade to no longer be between her legs but instead off to the left of her rotating hip which soon turned to the front, the flame scorching her magical armor but not destroying it thanks to not directly impact. Basically, she was now moving through the air with her feet only slightly above the ground, her body parallel to the side of the sword rather than perpendicular.
 
She would very quickly fly past him to the left, far too quickly for her to take advantage of any opening but also likely too quickly for him to do anything to her either. If he did try to stop her then he'd have to get whatever body part he used slammed against her, which wouldn't be very good for him or easy to stop her regardless of such efforts. Only a few feet after passing by him she would land with her right foot facing sideways, crumpling her leg underneath her and send her tumbling sideways until she came to a rough stop around six feet behind her armored ally's position.

Eyes flicking between both opponents, she would scramble to her feet and decide the best course of action.