Originally Posted by
fire_of_avalon
1) Just because you are a pirate, doesn't mean you're a pirate forever. She gave up her piece of eight, and the Brethern was broken, so she's no longer Pirate King. She looks like she's just hanging out with her kid now, which makes her not a pirate/sea-farer. That isn't explicit by the end scene, no, but it pretty much seems that her life as a pirate is done with.
2) She has to die AT SEA. In a boat, on the ocean. They were very explicit about this, just as they were about the need to be a man/person of the sea. Again, she has a kid, she probably doesn't travel so much anymore.
3) You could be right about that. Now that I think about it, the whole hundred years' contract thing could've just been a way to showcase Davy Jones' cruelty after he cut out his heart. We don't know if that's imposed by the individual captain or by the duty.