Before I was baptized I was going with a "worldly" girl who's aunt was a white witch. She taught her spells and other such things. One night I had to flee for my life, because I came into her apartment and found her being raped and sodomized by an unseen entitiy. So to me these demons are real. I have a tremendous amount of respect for them and stay outta their way.
As a practicing Druid and having a somewhat broadbased knowledge of the occult and things esoteric I am quite sceptical about your account and would like to hear about what you did 'actually' see.
Secondly knowing numerous practicing pagans some of them 'white witches' (for want of a better expression). I know they are bound by their crede 'And it harm none, Do as ye will' which broadly means, 'do whatever you want to do but harm none.' Most 'white witches' believe in the law of three or something similar which means that whatever you do whether magical or mundane will return back to you (which is something similar to the biblical concept to 'reaping what you sow').In light of these maxims I have to point out that the majority of practicing witches are good people who would not dream of harming anyone unless there was a very good reason (and even then in the last resort). They do not concern themselves with demons or satan (mostly because they do not believe in either given they are a Christian construct) and neither would they concern themselves with summoning up such negative beings. It doesnt form part of their practice.
So in light of all this I have difficulty in linking your experiences to the Aunt you describe and advise perhaps that you should look elsewhere for your explanation.
Notwithstanding this, I have to suggest that perhaps your explanation would lie more in the physical as opposed to the spiritual - sometimes the mind doesnt allow us to see what might cause us distress or pain and I would suggest getting some professional advice about this experience.
Gary /|\