I find blinking out of iceblock to have more of a delay than soaring out of iceblock, but soaring is easier to shoot. It really depends on where you are, who is looking to end you. Not staying for the full 3seconds CAN mislead the enemy too.
Ash's shield is very small and easy to avoid(it can even go throught you ) , when you buy cc immunity item(she will try to move you character), you can easly rush throught it and make it useles, then u can easy deal damage to her and finaly kill
If you are crippled go to counter stance. The enemy will either not attack or if they do you can counter the damage. No matter what this will give you JUST ENOUGH time to escape the cripple and use billow to retreat