Was Lein techincally telling the truth when she played along with the idea that Elan was indeed the prophet of Banjo? I doubt she really thought so, but she was willing to go along with it to save her neck.
At the very least, I suppose one could say that she absolved herself of lying by saying "If you really are the prophet of Banjo, say something". The 'if' being highlighted by me. But I think it is trying to play along with the deception.