Can't get to a location

I will try to post a screenshot if necessary. I have a PS4 and the only way I know to get a screenshot

is to share it to facebook and then take the picture from there. It is my first Playstation. Also, this is

my first Mass Effect game I have played.

I am doing the "find Ruth Bekker quest" and I have traced her to Kadar (the last step)  When it shows

the quest location on my map, it is in the black area.  It is to the northwest on the Kadar slums map.

I am driving the nomad and every time I start to enter the area where the map is black, the game tells

me that I am leaving the mission area. Also there are two memory keys in this area. I have tried it

from all different angles but each time I hit the black area, I get the message. I have already spent a

lot of time on this quest. I am about ready to let her die there.  But I need to know what it means when

the quest marker is in a black area. (I have googled this with no luck)  I thought maybe the black area

meant something on a different level but I see no way to get to a different level.

Thanks