Grant hit the water and had to drop the ball on the tenth par 4 hole.
She pushed the chip and the ball came only halfway up the undulating green and then rolled back into the pond.
She had to drip once more and had a couple of painful minutes on the green before she could note eight strokes on the hole, a quadruple.
She went from a split second at -3 to a split ten at +1 on the hole, then seven strokes behind the lead.
The competition is ongoing.