Sakura's Feather

if any of you have ever even seen a Tsubasa Reservoir Chronicles episode then you and I know clearly well that these feathers are Sakura's...I'm still trying to explain the whole feather ordeal and I've only come up with this....

Feather=wings=memories=heart=sakura's life

no feathers= no wings= no heart=dead sakura

I don't think we want that last one....