Bonney doesn't have the slightest profile as a conqueror, emotionally unbalanced all the time, crying all the time. That scene there was the perfect construction for God of the verse to save her and make the fanboys cum on their Luffy towels. This Kuma flashback is possibly about what Bonney saw in that bubble of Kuma's memories, and now it's ending with Luffy in the flashback, incredibly Bonney in the present is in danger and Nika is close to save her, it's more than obvious the cringe joke that Oda wants to make.