who is messana

i have just been rereading the 11th book for like the hundreth time and i think that messana is tsutama the highest of the red (may have been posted before).  does anyone know if this is probable because she seems to treat others as mere mortals and seems to have a vast amount of knowledge of the outside world.  She also has been in "exile" and has (not postive when?) reeappeared.  and as always i still say silver will kill a gholam. ;)