In a quiet laugh to Lyssa's reply, "Certainly." Zarra then looks at all and then directly at Alex and says "You will find that Alex has been decieved in some of what he says; however, the journey will be quite long and will be very dangerous. I therefore recommend that everyone make the bulk of their purchases now and get the rest that they need." She then turns and begins to head for the exit, turning her head only to say "I can explain more to anyone who wishes to follow."
(Diplomacy +9, to not appear rude, but to interest them all in finding out more of truth and the like)