Regarding Asha:
She was thinking about rebelling against Euron - the kingsmoot is brought up in conversation while Asha is at Deepwood Motte, and one of her crew mentions a moot that was declared invalid because one of the claimants couldn't make it there in time. Asha realises that with Theon unavoidably detained when Euron won the kingsmoot, there's a chance to challenge its validity but before Asha can act, the hill clans liberate Deepwood and capture Asha.
Apropos lots of other things from ADWD and TWOW teaser chapters:
fAegon and Jon Connington (book only characters) are taking control in the Stormlands
Arianne Martell (book only character) is on a diplomatic mission to check up on fAegon
Areo Hotah is not dead (currently hunting Darkstar with one of the Sand Snakes and Ser Balon Swann)
Ellariah Sand is not willing to see Dorne burn to get revenge for
Inigo Montoya Oberyn
Two of the Sand Snakes (who are better written than on the show) are on their way to KL
Talisa Maegyr Jeyne Westerling is not dead, but is being sent to Casterly Rock with Edmure Tully
The BWB have Tom O' Sevens in place as a mole at Riverrun
"The North remembers, Frey" (rather than having selective amnesia or not giving a toss.
)
Frey pies! Omnomnomnom...
Barristan Selmy's not dead (though if GRRM kills him off at the Battle of Mereen, hopefully he won't go out like a punk)
Tyrion's not met Dany yet (he's persuading a mercenary company to switch sides during the Battle of Mereen)
Doran and Trystane Martell aren't dead (yet)
Shireen and Selyse Baratheon aren't dead (yet)
The Hound has not re-entered the game (yet)
Sexy Jesus Jaqen isn't training Arya in Braavos, but he is in Oldtown, having killed Pate
The night is dark and full of
terrors butterflies....
Based on the last TWOW chapter GRRM read at a convention, Aeron Greyjoy is in deep trouble, and Euron is either trying to summon Cthulhu or achieve apotheosis via a massive blood sacrifice