I think there is too much speculation about Nora not getting along with Milana and Coco. Photos that I have seen,on other sites, with Nora, Milana and Coco makes me think they are good friends. They seem to hang out where Nora works or maybe they work there too. In the photos of the three together they are laughing and seem to be having a good time. Not a trio that one does not like the other two.
Seeing photos about a month or so ago as I remember, Milana commented that she was a "Hospitality Manager and she loves her job" or something similar of which I think it was at the same hotel where Nora works. So maybe Milana and Coco got their own apartment as Milana commented that Coco is her sister. Also could it be that when new girls begin working where Nora works, she takes them in until they get their own place or could it be some of the girls that return to Nora's place work at other hotels on a rotation of a few months here and a few months there.