Chapter 399 "Connection

When the first aberrant monstrosity charged forward with a shriek, Agatha merely shifted slightly to one side and, in the fleeting instant she crossed paths with the enemy, she tapped it with her staff, causing it to burst into flames in a "Cremation" spell instantly. She then lifted her staff and pointed forward before the pale, fierce flame hit the ground, drawing a blinding white line from the fire, sending it hurling into the path ahead to spread like wildfire and scorch those hideous monsters.

She was trying to avoid large movements to lessen the impact of fatigue and pain and minimize contact with those grotesque creatures in order to reduce the drain on her mental strength—since she didn't know how many unkillable monsters were waiting ahead, she had to conserve her energy.