Yeah i guess she joins Luffy, like Oden joined whitebeard.
I still think Oda is building Kids crew as pendant to Luffys:
Luffy - Kid
Zoro - Killer
Sanji - Heat
Jinbei - Wire
Yamato - Jack
Nami - Ulti
Usopp - Page1
Brook - Pomp
Chopper - Dive
Robin - ???
Franky - Bubblegum
I still think Oda is building Kids crew as pendant to Luffys:
Luffy - Kid
Zoro - Killer
Sanji - Heat
Jinbei - Wire
Yamato - Jack
Nami - Ulti
Usopp - Page1
Brook - Pomp
Chopper - Dive
Robin - ???
Franky - Bubblegum