Dream Of Harry Potter Elevator Skeleton

I was in the Harry Potter universe and I got a guided tour of the castle. We used a really old elevator that was kind of broken and we found a skeleton of a mother and a child inside it, cause they were crashed by the broken elevator. It turned out that the gardening lady was stealing livers from people and then buried their bodies in the garden and hid it by planting flowers on it. Me and my mom were trying to find out what that lady needed the livers for, walking around hogwarts and walked past some people that were roasting chicken breasts and we're both vegan, but I took one chicken breast and ate it and hid it from her.