Their plan, like many plans, did not survive contact with the enemy.
(And the Scarlet Witch is their enemy, the chains she's woven choking Loki, threads binding her limbs - as bad as or worse than any woven by the Norns - )
Nausicaa had thought they could negotiate. Sue had been sure her mother would be reasonable. Five-in-One had thought their combined minds, their skill and power at magic, could shatter the Scarlet Witch's spells -
It's getting harder to breathe.