Both of the bigger designs on the right are her final- the first was to be her form "before" and the second her form "after." I imagined that she found a way to make her soul immortal, but not her body. So her body withered away and as time passed she scavenged new parts from other creatures to hold herself together.
And yes, the witch in this story is a she, I've had her mistaken for a man more than not. :'D