User blog comment:Kaido King of the Beasts/Chapter 873: The Finale of the Opera - It Isn't Over Until the Fat Lady Eats/@comment-24850639-20170720161852/@comment-24850639-20170720182513

Doing a complete 180 right then and there would have been a little far-fetched sure, but at the very least you would have expected her to be mulling over Sanji's words to her. For Sanji to be literally the FIRST person to ever compliment her eye and not treat her like some freak, or only talk to her about her third eye, you would have expected a moment like that to have a resounding impact on her. Especially afterwards when she was still trying to execute the plan, and he implored her to think about what she wants for herself.

At least from my experience in anime/manga, when a character that has been through what Pudding has been through is shown that kind of concern for the first time, it endears them to the person giving the compliment. More importantly, it causes them to really evaluate their life up until that point. We got no such moment from Pudding. She thought briefly about how the Totto Land kids and Big Mom treated her for sure, but then it was right back to trying to shoot the guy that complimented her and showed nothing but genuine interest in her well-being. She then sees Sanji saving someone else completely different, and no longer caring about her. Maybe her exact emotional reaction wasn't jealous, but it was definitely strong enough for her to somehow think that Sanji needs to pay for giving her a damn compliment. The chick is twisted. I don't know the full story of what exactly happened between her and Lola, but I'm guessing it will become more relevant if we get to see the relationship between Pudding and Chiffon play out somewhat.