The Fire Witch/Hag has some issues with her fireball targeting.
When the elevation becomes too steep she will shoot all her fireballs over the top of the PC. I can stand completely still and at a low enough elevation and she will miss 100% of the time. Moving to a slightly higher elevation will make her land her attacks.
Some examples from nameless pass:
Standing still at a very low elevation, all attacks miss:
Standing at a low elevation, all her attacks will still miss:
I moved slightly towards the camera and was at a higher elevation and now her attacks land:
