What do you mean by she "don't" even speed? Don't you mean she "doesn't" even speed?
Also, you can tell that Carly speed hacks by how fast she can swing her sword in a different direction RIGHT AFTER SHE SWINGS and how fast she can spam her sword while moving. I've seen people spar where they immediately swing in another direction after missing but none of them are as fast as Carly. Take Dante for example. I see him swing his sword immediately after he misses but he's not as fast as Carly. Carly also can't be using the excuse that she's using a really good computer because I've sparred on my friend's desktop which has a good graphics card and an intel i7 processor yet not as fast as Carly.