wringing water from her hair
Thoranih (ธรณี)
Sanskrit-Thai. Mother or goddess of the earth. She appears as a witness of the Buddha’s accumulated merits from earlier lives, just before the moment of his Enlightenment. In art usually depicted wringing water from her hair, thus aiding the Buddha in his resistance against Mara by flushing his army of spirits away, saving the Buddha from the temptation of desire. Also spelled Thoranee. In Thailand she is known as Mae Phra Thoranee and is the chosen symbol of the Democratic Party. See also bhumisparsa and maravijaya.
Thailex, Thailand Travel Dictionary
The kind of world I live in – exhaustive google-searching finally finds her on a Thai Travel site.
The kind of world I live in – a thousand images of earth-touching Buddha online and only one (marapajon) that shows Mae Phra Thoranee, who was also there.