Excellent clip, thanks for sharing your find.
I follow tennis pretty closely but not familiar with this player. Great reaction and a shame the video cuts a small section, where we might have seen the other foot getting the same liquid pen thing administered prior to the bandage. The very same tool that caused Genie Bouchard to be so ticklish in the wonderful video.
Other tennis players have confirmed their ticklishness (Heather Watson, Elina Svitolina, Anne Keothavong spring to mind), but clips are rare. Donna Vekic a recent bonus.
Jelena Ostapenko visits the nail salon regularly to get her feet and hands done, and the vids are shared on insta, but so far not seen anything concrete.