I gave it a second attempt with some minor adjustments and was able to defeat Dallis, Alex, and all the mobs on turn one.

https://www.youtube.com/watch?v=ujtprzuEBCc

Oh! It turns out she drops her hammer when she transforms and leaves the area. I didn't notice it the first time around.

https://scontent-dft4-2.xx.fbcdn.ne...1288f98edd1b8bbfc69f2139&oe=587F5A4A

https://scontent-dft4-2.xx.fbcdn.ne...915d9cd2b4ee3cc6ac0aa07f&oe=5873B41B