Throughout the various permutations that we have seen in both apartments, Petra has seemed to be a calming influence. She has shown compassion for the various women who have crossed her path, each with a different story. I have made clear that I don't often speculate on things but I read that Petra was crying recently. Perhaps it was for the changes and the people she cared about.
Whatever Nikky is, she is a human being and I am sure that despite whatever industry she is in or whatever she is currently doing, Petra will treat her with kindness. I like kindness. We have no idea what this woman's situation is, so I reserve judgement about her.