Or she's younger and and better than the other ravens.
Maybe the raven we played as before is like a jobber raven
This is Tekken, every female master is over 40 but young looking because of reasons.
I could be wrong, though. Guess we'll have to wait for more story details.
They've done that in the past too. Christie took over for Eddy and Panda shared space with Kuma. Although in those cases, the old characters weren't dumped from the game (though Eddy was heavily sidelined and pretty much a secret character until Tekken 6).
No doubt about it, but this is like the fourth time they've done it in 7.