actually in even in the jap eppisode where she endsup on the moon and meets her other MOM, her mom tells her+her friends everything including her princess name=sarina, as far as the meaning goes, that is of greek origen, infact the belief that there is a moon goddess is a greek belief!!!!!!!!!!!!!!
the queen in wedding peach, and in pretty cure are both also greek goddesses!!!!!!!!!!!!!!!!!!!!!!!!!!!
though in real life every god/goddess except the christian god were actually aliens mistake for that stuff