Now of course they're free to do whatever they like, but one would think they'd at least win something before claiming nothing is left for them to prove. And if they fail at the next level, they've certainly burned the bridge behind them. Perhaps the sponsor dollars are large enough to make the risk worthwhile.
The sponsor dollars are definitely there...but they will dry up quickly if she continues to fall short.
Remember Anika Sorenstam...appeared on only one PGA event and she is arguably the best woman golfer ever. But her appearance/performance apparently sucked all the PR/sponsor dollars out or her pride lead her to elude the appearance of being a loser.