Nah...she probably got killed...or killed after doing something...like how she sent a letter too.
Anyway, it seems to be a new plot but will just be an Alabasta story nothing for all I know. I mean if the kingdoms themselves were that important...we would have known about all 20 kingdoms during the journey. None of the CD too look like proper leaders
That is an oath for the CDs who made the Govt...and are basically the rulers(a group)...its a group of 19 so there are 19 swords...Lily is the same as the rulers of those CDs kingdoms Ruler...She doesn't have the same authority as those 19 who were at the top. Same as how DD's father left and became nothing..