The fronds of this fern are semi-evergreen but wilt once a year. Possibly a Japanese Shield Fern (Dryopteris erythrosora)? It's a tall statuesque fern in full growth but the fronds have opened fan-like to reveal the presence of a garden spirit.

 In Greek mythology nymphs personify nature in the form of a female deity. Different kinds of nymph were found in different places. So I think this one would be a nymph of the Alseids (groves) or Dryads (forest).