User blog comment:HowtobeaGrimm/Where is the apple?/@comment-26976525-20151008095119

Yes Trubel isn't important to the scene, just the apple is. Anybody could have been eating it. It is a "symbol" or icon of which fairy tale is being told at that moment.

Nick is Snow White, the one being tempted

Adalind is the witch, disguised as an old peddler woman, or in this case Adalind is a hexenbiest, a corpse looking creature when she woges, disguised as a beautiful woman. The important thing is being disguised, deceiving Snow White not particular what the disguise was.

Losing his Grimmness is equavalent of Snow White falling into a coma.

The Dwarf's put Snow in a glass coffin. The wedding party put Nick in dark glasses. Bart and Monroe stand Nick in front of a mirror (a glass) and he puts on the glasses and coughs. The dwarf's have put Snow White in "a glass coughing". It's a pun.