True daughter of Whitebeard

Shayla has been with the whitebeard pirates for over 5 years when a dark stormy night changes everything. She fell over the rail and ended up on the other side of the world. She met her old rival, but why was he so much older than her now? Who is this kid that reminded her of the pirate king? WHAT! How long has she been gone? Element-bending AU. Act 3 of Wano spoilers. Also on AO3.