Who is this sister? And, what is she doing?!

While on assignment yesterday, our Roving Nun Photographer spied off in the distance one of our sisters, seemingly walking on all fours, and was inspired to zoom in from her vantage point in the orchard and take a photo. Was this sister engaged in an act of extreme penance? Was she searching the grass for a lost medal?! Or, was she merely...weeding?!