User blog comment:Kaido King of the Beasts/Chapter 840: My Worthless Son/@comment-202.51.88.29-20160921131148

I think Reiju will help Sanji escape or help him some other way in this arc. She's the one who helped Luffy with the poison and in the flashback she seems okay-ish. I'm half convinced she's the one who helped him escape in the first place.