In a picture where the flames are still small, I see a fear and disbelief on older woman’s face, like ”no, this can’t be happening, those flames can’t be real”. On younger woman, I see fear and pleading, like ”please, don’t do this to me”
In s second picture, the younger woman seems desperate, she’s losing her hope and her strenght and ready to give up to flames.
Older wonan’s face is much more interesting to me. She’s in pain, but there are defiance and strenght, like she could start to feel the pleasure behind the pain, sucking more and more power from the flames, knowing she’s going to win eventually. She could be a witch, who knows that flames don’t harm her and she just have take the pain, live the moment and take most out of it.