Renna goes over to stand by the door, watching as the security guards round up the loitering actors and sends them scuttling away. She tries to hear what they're arguing over, but can't make it out. She could go inside, but the risk of attracting Murnau's legendary temper like some kind of anger-lightning-rod keeps her frozen where she stands for the moment.
If they needed her they'd call her in, she tells herself. If she went in without invitation...well, maybe best not to disturb them when they were already clearly high-strung. She'd give them a few minutes to calm down a bit.