Well, the shark didn’t eat her. Sounds typical for a Great White (GW), actually. GWs eat seals, and a human is not a seal. So maybe it mistook her for one, or just decided to take a bite and see what a human tastes like, or just instinctively bit into her, but spit her out; or didn’t return to finish her at least.
My theory is humans don’t taste right to GWs. And clowns taste funny to them.
GWs seldom attack humans because we’re not their preferred prey.
Same with bull sharks and salmon sharks. Co-existence is possible.