I dont think she can see you from the window, There are operating from two flats. She and her mate are in one flat and like three other girls in another flat.
This might sounds confusing and this what happened to me. The flat number that buzz you in and the flat number that she works in are different. I did not see the flat number she worked in on time so I went to the flat that buzzed in and there were three WGs in there
I even bumped into another young black punter in that flat

suited and booted very likely coming from work, I walked because I thought it was a B and S. myself and the other black guy started talking as we left at the same time
My first experience bumping into another punter and it was actually calm and not weird at all

I was making my way home till she called and told me to look at my messages. I have a feeling she might stop seeing black guys again because she went on about how she had seen 8 black guys already and not to pound her hard blah blah.
She most probably just had enough for the day thats why she did not pickup