Henry found Hatfield in a random island, she was starving and tried to lure Henry in with her songs and her looks, and when she got arms reach, she did not stand a chance and got beat in a struggle, just before Henry was gonna kill her, she just begged and pleaded for her life, asking to be spared rhat she was just hungry.
Henry paused for a moment, turned around and went back to the ship and came back with a sandwich, which she ate up quickly.
Henry offered her a ride home with her guidance, and snuck her in with cloth to hide her wings, when they were near the island Hansen, Henry’s first mate, realised that she was a siren, assuming Henry was tricked he quickly defused the situation explaining what had happened.
Hansen and the crew were furious because sirens could not be trusted, they are mischievous and monsters, before anything else could happen, The sirens had attacked them and apprehanded them.
Hatfield explained that Henry helped them and that they should just let them go, they denied her request, so she ended up attacking them to Save the one who Saved her, Henry broke free, sent viktor to clone itself and disoriented the siren flock, the crew got free and the now power and ironskin potion buffed Henry took all them down and helped Hatfield out.
The crew took abit of the treasure for consolation, and Hatfield was afraid that they would hurt her for her betrayal, Henry understood what it felt like to be afraid, so he Offered her a seat on his Crew.