Watch your char: if you have a small white eye icon = you're blind, your spells won't work, not the targeted ones. The area spells still work.
Curse: Take the survivor curse not the mage curse. Level 1 should be sufficient, cause you can use it several times, it's cumulative - then freeze should work on her.
I did it like this:
Curse 4-5x, elemental hail - she was dead very quickly/fled very quickly.
Banish on her deadknights, they fade away.
Curse 4-5x, polymorph, lightning on Josie bunny, cause she was fast then and lightning follows the target.
Traps: Tingalf/Ars Magicana - Mpenzak/Verdistis, Blake/Ars Magicana sometimes. You should use Aura of Command on your scorpions, so they follow you and don't wander off.
Kiya