In some translations, when Ace mentions Dadan before his death he refers to Dadan as “him”. This is because the Japanese word he used to refer to her was genderless, and the translator did not know Dadan’s gender at the time.
Two years later, after reading the news about Luffy’s return, Dadan and the other bandits celebrate, with all of them wearing straw hats while Dadan herself is scrapbooking news articles.