Pudding is definitely up to something. Spoilers for "One Piece" chapter 849 reveal that Big Mom's daughter may resort to making a huge sacrifice so Sanji can live free with his friends at sea. However, the plan may not go all too easy on her.
The previous chapter seemed to throw hints that Pudding is contemplating something that could help Sanji and his friends get out of the sticky situation. Pudding appears to be love-smitten by Sanji's charm and sweet words. However, she also seems to doubt Sanji's sincerity. It is speculated that Pudding's doubts will lead her to a decision that will change everyone's lives in "One Piece" chapter 849.
Pudding also paid a visit to Luffy and Nami's prison cell in chapter 848. She whispered something into the prisoners' ears and said her last goodbyes in tears. Luffy and Nami seem to disagree with whatever Pudding told them. Since Pudding has already left, it could mean that she has made up her mind. "One Piece" chapter 849 may depict a shocking storyline that fans have not been expecting.
Other "One Piece" chapter 849 spoilers point to a potential life-and-death decision for the Charlotte daughter. An earlier report by Game N Guide suggests that Pudding's revelation to Luffy and Nami could mean a seriously dangerous plan of escape that will possibly cost one's life. It is unclear whose life will be in danger. Based on Pudding's actions, though, she may be willing to pull off the ultimate sacrifice so Sanji and his friends can obtain freedom.
Big Mom appears to be fine as she retires to bed the night before the wedding. It seems that she has no idea what Pudding is planning behind her back. Other "One Piece" chapter 849 spoilers suggest that Big Mom may discover her daughter's stint and will block any escape plans before the wedding ceremonies. Instead of a victorious escape, Pudding may find herself further trapped in her mother's grasp.
The reports are merely speculations up to this point. On the other hand, the hints provided in the previous chapter could put the pieces together soon. "One Piece" chapter 849 is expected to be released sometime this week.