I know the canon transformations don't change the hairstyle, but I just really like the idea of her hair seeming kind of feathery when she transforms, as opposed to limp and soft like it was before
So yeh
Also her cape is made of feathers, and acts as a shield. When she uses her power, feathers fly out of the cape and attach themselves to her allies, to stop their timer (or restore it back to 0) so that they can use their power again. When the power is used, the feather vanishes.
If we need to, I can put a limit on how many feathers she can attach to her allies, it's already just one each but maybe how many allies she chooses? Idk