I was doing the dark brotherhood quest line and I got to the mourning never comes mission and I killed the two people it said for me to kill. When I went back to the city, I couldn't find her anywhere. I have a waypoint on my map but it's a impossible place to get to. It shows her being up in the mountain like above the town. I don't know what to do. I tried to contact Bethesda but I have gotten no response so far. Does anyone have a solution to my problem?

. P.S. I'm on PS4 btw