People would say she did it because she was tricked, because that frog was clever and charming, and because she was naive and wanted her ball back.
But, really, neither was true. You see, she felt the soft smooth lips of her mother while saying goodnight, and she felt the hot wet lips of a boy while behind the bushes. And when that frog tilted his head and she saw the moonlight reflect off his skin, she was not beguiled. She was curious.
So, she kissed his cold damp flesh, and was disappointed when he turned into another prince.