Personally I don't see there being any 'direct' connection. There are other cards in the deck where the Fey is holding their hands in the same manner- King of Cups, who is actually holding something, but then there is the Ace of Cups, who is attempting to actually hold something, hmmm, what other cards?
With the Ace of Swords and Justice, there is the question, are these items being received or are they being 'sent off'?
A typical Justice card has swords, as would the Ace of Swords, a mental thing.
But the Justice Fey has a feather. Think about this, what is a feather? What is it's purpose? It alone, cannot be of any use for it is part of many that make the whole. The whole brings flight, with flight brings an overall view, a perception that is wide & high. With such perception, again, everything becomes whole and to have the whole is the best to have when Justice is at hand.
I see the fey Justice as more of a force of nature. Like the feather and the bird that needs it, it is an intricate balance within nature that is 'reality'.