This only proves she is not as relevant power-wise as everyone thinks. She did nothing but jogging around Kaido dodging his attacks and Kaido literally used only one named move and she barely matched it. She didn't break Kaido's stance once, nor she damaged him heavily.
Whats confusing is that you can't say for certain that the wounds kaido got from his initial battles on RT are dragging him down.. if it was someone else you could certain and assume that ultimately the initial fights are affecting the dude now but.. Kaido doesn't seem to even Huff against Yamato over the course of their whole battle..
So kaido isn't at 100% coz he fought multiple opponents and even got a scar.. but that doesn't seem to drag him down unless you assume Yamato was landing blows due to fatigue and repercussions starting to act up.. and still keen on seein Luffy as a easily beatable opponent.. i can't gauge how much kaido have dwindled at all with the given facts.