>>150847038
All they had to do was use a ranged attack, or a spell or hex of some kind that immobilizes Kat. Wrap her in vines, paralyze her, whatever. Or just shoot her with a magic missile.
Its hard to imagine a less effective plan of attack they could have chosen. The ONLY thing they have done well so far is isolate Kat to attack her alone. Everything else has been worse than the first plan an actual child would come up with.