SpoilerThe price she pays for not being able to suppress being Arya, or just the next stage of her training?
There are 'Arya' chapters in Dance, but there's at least the possibility that they will be fake Arya/Jayne Poole chapters instead of Arya Stark ones. Sansa's later chapters in Feast went under the 'Elayne Stone' name rather than her own.
If that chronology is right though, Arya's story is already told well in advance of everyone else in the story, so it'd take a while to catch back up to her.
Feast for Crows
I hope it's not the false Arya. I would have thought Theon's chapters will cover that area. Now that she's (hopefully temporarily) blind, Arya's warg abilities might strengthen. I could see her being reunited with her direwolf with it acting as her eyes. Although that is a bit similar to Bran's current situation.