You give too much importance to LB. If she has never phoned him up until now (at least not in front of the cameras and not even in the bathroom or out in the lobby) since Monday, I don't see the reason to go out together now.
There is not only LB in Prague. If, on average, Leora goes out with him once or twice a week, that's already a lot. Most of the time she goes out with friends or to do her own business. Today it will certainly be like this, there have been no phone calls from LB and Leora has not made her usual mega preparations to go out with him.