I also see this card as being about perceptions. The threat of the swords is a mental one, one of perception The lamb can either be tortured by her thoughts, her past, her mental ruminations, or she can rest calmly (the horizontal lines that continue beyond the swords, and arguably beyond the card) and see through the thoughts that hang directly above her. It's in seeing through her mind-stuff that she can have clarity and wisdom.
There's also the possibility that the swords represent stuff going on "behind her back" gossip, that people may perceive her as being a weak follower, but she has the inner calm and clear-seeing to be smart enough to not get involved in back-stabbing.
There's also, like someone mentioned earlier, a feeling that the swords are hanging on a wall, like a collection, as though they are either only decorative or are tools and not weapons. For me, it could represent truce. The lamb is alert—likely not ready to go on the offensive, but certainly ready for defence if necessary. She's watching for what the next move is. So there's an idea of laying arms aside in neither defence nor offence. Peace and clarity only occurs in the pause between attack and defence… not only in action, but in thought and communication. How often do we write or speak out of reaction, out of either attack or defence, without seeing clearly? Is that radiant sun in her forehead active when she is on the attack or on the defence? It only shines brightly in the pause… and from that clarity she can move forward, clearly, calmly, determinedly, toward the viewer.