Dream About Meeting Ex Friend And Underground House

I was in the school and again I met my ex friend idk why she was wearing abaya . And then we were called in principal office. We split and I went with my classmates after sometime we were let to go through some way a woman took the old nun principal through the circular staircase underground. Suddenly one of the shoes of the nun slipped it was black women shoe so I just randomly took it and funnly thought about throwing it at staircase down but one my junior started staring at me . I went through the staircase and it was a home underground I met one of dead family member and I greeted him and I also saw her wife . I went outside but the house seems familiar even from outside. Anyways I was in. A room outside sitting with my Lil cousin brother their was a man infront of us who was not looking good . He attacked my brother rather than me being a girl . The man hold my cousin brother by throat and broked his collar bone . I ran away for help