Serena jumps as the man opens the carriage.  She had not peaked out to see what the problem was and so was unprepared for a strange man entering the space.  She screams with the startle, but settles quickly with the calm of her Lady.  The man's smile is oddly entrancing, but she hears her lady plead for her release.  She understands the job her Lady requests of her.  So she begins to memorize the man's face and check his weapons.  She also begins to watch to see what else she may learn to tell those who can rescue her lady.  She knows there is nothing she can do but get them killed if she does not behave.  She nods to the man to assure him that letting her go would be a good idea.  A silly smile on her face that she does not even realize is there.