Did Alberto call her "Margarita" when she entered the apartment? He clearly said "Hello Margarita", but with an English "hello", so it may have been an inside joke. Still, I wonder if that was a slip of the tongue.
I did enjoy her cheeky wave and "adios" to the camera and Juliet's nervous reaction to it. Furthermore I was impressed how civil M&A were up to the last minute. Not sure what to read into that. Maybe it was a professional relationship all along and did they part as colleagues rather than lovers. We'll probably never know for sure, but it's fun to speculate 😁