I was just sketching Riona in different action poses, and then this was drawn.
Rio, in the third stage of her released form (where she starts losing her semblance to a human being) is fighting someone, with some high-tech city in the background. Whoever Rio's opponent is, he is firing his lazor at her, which Rio blocks using her ability to control gravity, causing one thick beam to split into multiple thin beams.
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By the way, her wings are not made of normal organic flesh - rather, they are composed of something weird that can change its form and physical qualities at Rio's will. She does not really need the wings to fly (she can hover using gravity control), but the wings can produce dozens of tiny "thrusters", greatly increasing Rio's speed and manoeuvrability in the air. Weird spiky things coming out of her arms and legs are supposed to be made of the same material as the wings; in fact, her whole body starts to transform to be able to properly channel her power as she approaches the fourth stage (she also becomes inhumanly tough and strong in this state). Though, if she is forced into releasing her power beyond the second stage, her opponent has to be insanely powerful (or she is forced to fight a whole army all by herself, but I doubt it is the case here).
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Riona Rylendt © me
 siegfriednox