Did she not start bleeding after she skinned her knees by simply kneeling down?
Her “durability” seems to be directly connected to her haki rather than her actual physical abilities. If it was purely physical ability then that Caramel picture should be irrelevant.
Pre-TS characters that had no haki whatsoever were tanking superhuman hits. Meanwhile Linlin, a supposed top tier, starts bleeding after kneeling down. This manga.