godmother

kummitäti A woman present at the christening of a baby who promises to help raise the child in a Christian manner; a female godparent who sponsors the baptism of a child.
puhekieltä To act as godmother to.
1909, H. G. Wells, Tono-Bungay

The servants took to her – as they say – she godmothered three Susans during her rule, the coachman's, the gardener's and the Up Hill gamekeeper's.