Woodsford Castle

I've had a few weird experiences but this is the scariest. Me my sister, my parents, and my grandparents all went and stayed in a natural trust place called Woodsford Castle. It was really old fashioned with the decapitated stags and stuff, mounted on the wall along with chandeliers. In the visitors book there was loads of questions about whether the castle was haunted or not.

The room me and my sister stayed in was the oldest room in the castle. It was always quite dark and cold in the room even if we had the lights on and you always got an chilled prickly feeling when you were in there alone. Whenever I went into the room I felt an urge to leave and felt like someone was trying to make me get out.

One night I went to the toilet and as I was coming back up the stairs I heard footsteps clicking up the steps, which sounded like high heeled boots. This confused me a bit but I passed it off as my imagination and I walked back to the room me and my sister were staying in. When I opened the door I saw someone standing over my sister. It wasn't any of my family because they all denied being awake at that time. I couldn't see what she looked like because she was mainly a shadow but all I could really see was what looked like a long dress, suggesting she was a woman. As I walked into the room and there was a sudden chill and the woman vanished. I told my mum, who is a real believer of spirits and she said that the woman may have wanted me out of the room so she could be with my sister alone

But we don't know why she wanted my sister. We were all really scared and left a day early because we didn't feel safe. If anyone has any idea why this woman wanted my sister alone it would be really helpful to know