Silent Casting
I'm going to assume that Marivhon, Schmektor, Tut, Moth, Zom, and a badger are up around Abbey in melee, and that Dave FoO, Brogg, and Renwick are back a bit providing healing and casting. No one else can fit around Abbey anyway.
Badger smacks away part of the stoneskin.
With that assumption in place, Abbey Forcecubes the three casters in (Dave FoO, Brogg, and Renwick). It's not hard given the small number of people.
Those of you who might want to dispute this, okay, but Abbey can forcewall three to five people however she wishes. So let's not make too much of a big deal about it. If anyone actually wants to be in the Forcecube, like Tut for remote control of Zom, or Moth for missile weapons/casting, declare it. Otherwise, we'll go with this plan.
And yeah, she does this non-verbally.
Don't forget, Brogg, if you wanted to Cure, you'd have to do it away from Marivhon, i.e., away from the melee around Abbey, as you'd be in the Silence also.