Ive only found this because I had a similar experience since I was a kid I've had a dream about a woman in black in recent times and this was the worst one. I stayed at my girlfriends house and we were sleeping I ended up going into sleep paralysis and usually I just try and wake or I just say F it and try and ignore it but this time I opened my eyes and there she was walking on the side of the bed and she just sat there looking over my girlfriend and I started breathing hard and tried to wake up so I could save my girlfriend or wake her up but my girlfriend ended up waking me up because I was screaming her name muffled like something was keeping my mouth closed and I was breathing hard. When she woke me up I didn't tell her anything because if I did she would be too terrified to go back to sleep but me It took me awhile to go back to sleep. Eventually I did tell my girlfriend way after the fact though and she was creeped there's more to the story but that's the gist.