Sora is well versed in both swordplay and magecraft. Though she was never formally trained in the former, she is an acrobatic fighter, quite nimble on her feet due largely in part to her experience as a dancer, and behind each swing of her sword is plenty of strength. Most of her sword skills were learned based on observation of others and then she proceeded to learn what worked best for her, which led to her developing her own style.
As someone who was formally trained in magic since she was a child, it is safe to say she is a better mage than swordswoman, despite being strong in both. Once returning to retrain with Malakai after the events of the first Broken Sonata, Sora’s combat style also involves using magic with her sword (when deemed appropriate for the situation). She casts different elements to the blade to give it an elemental boost. While she does this, she is also one to use different spells on their own. While she may have fire surrounding the blade of her weapon, she will also cast an ice spell against her opponent or even create an illusion to distract them.