a supernatural being in folklore and children's stories, typically portrayed as small and humanlike in form, with pointed ears and a pointed hat

do you think she should grow out her hair or keep her pixie?

In full "pyxie moss". A prostrate, mosslike evergreen shrub, Pyxidanthera barbulata (family Diapensiaceae), which bears numerous tiny white or pink flowers and is found in the pine barrens of New Jersey and the Carolinas.