Here are the facts, from a guy (me) who was standing next to the 9th green at Interlachen when she made her 9:
Her approach shot finished short of the elevated green. She skulled a chip from thick rough into a horrible spot above the green -- a green so tilted, back to front, that the only correct play was sideways, 90 degrees away from the hole. Michelle and her caddy didn't figure that out; she attempted a flop from the rough behind the severely sloping green, and chunked it a few feet forward. At this point, the hole had officially become a disaster. She tried to feather a chip straight downhill to the hole, and hit a not altogether horrible shot, but it could not hold the green, rolling into the rough on the downslope in front of the green (note: had the USGA chosen to shave that hill, she'd have rolled back to the bottom of the fairway.)
She hit a skipping chip back up the hill but her shot didn't quite stick on the middle plateau where the hole was cut; it rolled back to her. She chipped back to five feet above the hole -- a prudent play, under the circumstances -- and then barely missed the put after taking the usual amount of time all the young women take over a putt. In other words, she never got so frustrated that she rushed or nonchalanted a single shot in that 9-shot sequence.
That was her round. She came to the ninth hole one over par, and left at at 6 over par. She was steaming hot walking off that green, but never slammed a club or uttered a word of anger. On the 10th hole, a 525-yard par 5, she ripped a great drive and put her second shot over the green, failing to get up and down for the birdie, but an admirable attempt to get back in the tournament nonetheless.
She finished 8 over par with a quintuple bogey. Nothing to be proud of, but no reason to write off her career, either.