My experience started about two years ago. It started out as sleep paralysis, but it slowly progressed over time. I know sleep paralysis has a scientific explanation, but these incidents started to happen while I was awake, as well.
The first time I experienced sleep paralysis, it was scary for me. I remember being almost asleep, but not quite, then being woken up by feeling a presence behind me (I was on my side). I was still living with my parents at the time, and I thought my mother had walked into my room, as the presence felt female. I tried to turn to look, but I couldn't. My body wouldn't move.
I could actually feel warm breath at my ear, and I heard someone whisper my name. Then, there a kind of raspy, throaty laugh. By this time, I knew it wasn't my mother because the presence felt too eerie.
In my head, I began to imagine what this person or thing looked like. It was definitely female, but it was more of just a form than an actual corporeal being. I was seeing a flowing outline, like a dress, hair pulled into a bun, and bright green eyes. Not green pupils, but the eyes as a whole were green.
By that time, I was, thoroughly, freaking out, and I was able to jerk myself out of the paralysis and turn my table lamp on. Of course, there was nothing there, but the eerie feeling of not being alone in my room persisted. The next day, I just chalked up my experience to being overly stressed and my mind playing tricks on me.
Fast foward a few months, I had been sleep paralysis free, and I hadn't given the experience much thought. I'd pretty much forgotten about it. By this time, I had moved away from home and was rooming with some friends, and things were going well. I was happy.
One night I was home alone while the girls were out. It was just me and the dog. I was sitting on the couch watching TV, when I noticed a flickering motion out of the corner of my right eye. At the same time, the dog goes berserk-growling and bearing his teeth in the same direction. I looked over to that area, which was the doorway leading to the kitchen, and I see the same movement again.
It was fast and dark like a shadow, but I know I saw it. The dog was still going crazy, and his hackles were up. I wouldn't have been as startled as I was if he wasn't concerned with it, but a dog's senses are better than human's.
I didn't see the form again, but there was a loud crash in the kitchen, and that was when I became fully scared. I waited a few minutes just to see if anything else would happen, but nothing did. So, I went to the kitchen, and the dish drainer was on the floor upside down. The silverware and the couple of bowls that were in it were scattered around it.
I picked everything up in a hurry and ran back to the livingroom. The dog had calmed down, but he was still on high alert. Later on, I told the girls when they got home, and they just said "well maybe the dish drainer was too close to the edge", and that I was too imaginative. I agreed with them, but I wasn't fully convinced.
A few days later at work it was very busy. I had been running back and forth taking care of customers, and when I finally got a few minutes I went to the back room to take a breather. It was particularly hot that day, so when the hair on my arms started to stand it was strange. I didn't feel cold, but it felt like electricity. That's when I felt the same eerie female presence again, like she was standing right behind me.
The picture in my head popped up again-the dark form in a dress, updo hair, and green eyes. It came to my mind without me even willfully thinking about it. The feeling it gave off wasn't good, but it didn't feel evil. It felt more curious and mischievous, but it was draining. It made me overly tired.
I heard the raspy laugh again, and a box of Styrofoam cups fell off the shelf behind me. After that, the picture in my head was gone. I ran back into the main room at work, and my face must have been pale because my coworker asked me if I was okay.
I feel the need to stress that I do not consider myself clairvoyant or sensitive to these kinds of things. I have always been open to the paranormal because I've always been interested in it, and I remember having a couple of experiences as a kid, but never as vivid as this. These latest experiences seem to want to actually engage with me.
It's been almost two years, I live with my sister and brother in law now, I have a different job, I live in a different house, but things still happen. I see the womanly figure outside of my mind now, along with other shadow like figures. It's not everyday, but it does happen anywhere I go. I'll see her mostly in the shadows, but I know it's her. Green always stands out.
I call her Rita, I don't know why that fits, but it does. I call the other miscellaneous shadow figures I see her 'children'. They'll move things of mine. I found a pair of my earrings inside a pair of my shoes with no explanation just a few nights ago. I've come to expect the occurrences, but the eerie, uneasy feeling always remains, and after she leaves I'll feel zapped of energy like she's feeding off me.
I stopped telling people about it because they think I'm just looking for attention or just trying to tell a story, so I deal with it the best I can. It still scares me even though I should be used to it, and I think it's mainly because how I feel after the occurrence is over. I don't like the feeling Rita gives me. The other little shadowlings seem pretty harmless, but to me, it seems like Rita has a reason for coming to me.
The description you gave also sounds very much like the step mother in Cinderella! (https://goo.gl/images/ng1FLg)
I am with Rook - cleansing and shielding yourself by a method meaningful to you seems as though it would be a good idea. Even if she isn't evil, she is draining you of energy and making you feel uncomfortable and that has to get old. If you are feeling particularly adventurous maybe try an EVP session with her first?
P.S. I don't mean my comments to sound flip or disrespectful. I do believe you and respect your observations- my mind just goes rampant making associations sometimes.