There should be a meditation on what is going on.
I recommend sitting in a quiet space and meditating with relaxing music. Perhaps some white candles could be added near you, to give off a nice feel to the room. Maybe a favorite scent.
You should try to think about being in a safe place, where you're comfortable. Just relax and think about what you had "seen" could mean.
I think it might be something draining and/or mischievious going on. I am VERY sure it's not a Witch. You could actually ask what it/she/he/they is/are. (Sorry for so many /)
Seeing is how you think she's a Witch, I understand that you seem to be new to this, and unknowing about Wicca and the men and women practicing.
"Witch" is an old term that was demonized by people who fought over land, women, men, money, power and control.
People who were in the way, they would say was a "Witch" and they would be taken care of. Most of the people during the Trials and Hunts (not just in Early America) that were hung, burned, crushed, tortured, etc. were innocent individuals that had done nothing wrong. They were the scapegoats (as Time has said above) of that time. Anyone that wasn't "accepted as normal" was a "witch".
Later the media made them seem so fake, disgusting, ridiculous, and laughable, they didn't believe in them. But if they did, they thought it was the poor,creepy, 90 year old woman down the road who had 20 stray cats and a scary looking house.
Nowadays, WitchCraft or The Craft is a Religion based on the much older beliefs of the people from over 35,000 years ago.(More evidence shows though, that it might have been over 300,000 years. During Middle Paleolithic times instead of Upper Paleo... The Stone Age.) But, it is more modernized and complicated, (Some refer to us as Neo-Pagans, but that is a branch of Paganism, which Wicca is also part of.)
But the age doesn't matter, it is the teachings! Which vary between covens, people and branches. But all hold very similar codes on Ethics and Moral standing.
Wicca was 'founded' in the 1950s by Gerald Gardner,he was an influential English Wiccan, as well as an amateur anthropologist, archeologist, writer, weaponry expert and occultist. He was instrumental in bringing Neo-Paganism to the public eye. (Courtesy of Wikipedia, the website dedicated to him and his life, and other sources.) He had written many books detailing what he thought, believed, knew and discovered in his time with a group called the New Forest Coven.
http://en.wikipedia.org/wiki/Gerald_Gardner (But he also wrote fiction novels, don't confuse those with his non-fiction.)
There were (Of course!) others who helped bring Wicca out in the open. But many consider him the Father of Wicca. I personally think he was an inspired man who brought his belief out into the open and wanted others to know about it. I haven't read his books but I do recommend reading something from several different authors to get a better understanding what a "Witch" really is.
I don't mind the term Witch, but I prefer Wiccan. But some others prefer the latter term because of the negativity that is attached to it, so they could remove that and have people see it in a different light and recover the older term which it is usually associated with, Pagan. Which Pagan (from Latin
paganus, meaning "country dweller", "rustic". The Heathen part is used towards technically anyone who may or may not specify further religious affiliation.)
In Wikipedia Paganism is called a blanket term for Polytheistic religious traditions. When this is incorrect with (most) modern day Pagans. It is a Dualistic belief, in which Deity is both Male and Female. God and Goddess. The Polytheistic part comes from the confusion that we 'worship' the Pantheon of one to several ancient cultures. When we use their likeness, which would be associated with what we are looking for, for rituals, meditation, healing, etc.
It is a Religion which heavily uses symbolism and mythology. Which is like any other religion correct? Well, we use it in a different way.
Example:
Hecate, (Pronounced He-kuh-tay) a Greco-Roman Goddess associated with magic, witchcraft, necromancy, and crossroads. She is also closely associated with dogs and is seen as one or accompanied by one. She is also seen in 3 aspects, selves and/or faces. (Like the Maiden, Mother and Crone, which is how The Mother Goddess ((Peace and Love to Mother and Father!)) is shown. The cycles of the seasons, the moon, and life itself. Life, death and rebirth.)
You would call on her for help with magic, healing, decisions, healing of animals.
Oh my goodness, I've typed so much! I meant it to be a quick post, something that EarthAtic could read instead of having to google some of it. And there are sites that wouldn't help. So here's the short version!
(TL;DR means Too long; Didn't Read)
TL;DR: Witches are people, Wicca is a religion of symbolism and mythology. We have a God and Goddess who is a symbolistic manifestation of the All and One, we choose to acknowledge that they will and do have different names and faces from ancient Pantheons, Religions/Prophets, and even more personal ones we give them ourselves. We believe both genders are important in nature and everything has some form of balance to it. It is a nature based religion.
"An Ye Harm None, Do As Ye Will" is the code or Rede most Wiccans live by. Not all, because people have their own take on it, like Chaos Magicians and people who act on the more dark aspects of their emotions and the like. Or who choose to remain more neutral than dark. Even those who are Christian-Pagan/Wiccan and use the Bible as a part of their main beliefs.
"An Ye Harm None, Do As Ye Will" is the Rede that means, "As long as nobody,
including yourself, is unharmed, you may do as you will." Meaning, we
will ourselves to do something (or nothing), if we have the will to make a choice, we accept consequences of our own will and action or inaction. Good or Bad. As long as it doesn't hurt ourselves or others no matter the gender, species, creed, race, ect. If it does, we should face what happens. And we never bend the will of others to do anything.
What has been happening to you could be a number of things, I wanted to post something that would help you get an understanding of us before you think a family of witches is causing you distress. There are bad people, and every belief and religion has their fair share, but please find out more before you make up your mind.