Helena almost flinched when the very easily recognizable nurse's voice asked a question. Well then, that was definitely surprising. She kept her attention focused forwards, though. Only thing she found somewhat worthy of note is the 'ties to the LifeWeave company'. She didn't really know what those ties were or what the company was, but eh, it was good trivia anyway.
Then the class got properly started, lights dimming and projector ever-so-slightly whirring to life. She couldn't help but lean a bit closer to her notebook, preparing to write whatever would happen, if necessary. However, it started with a disclaimer. She'd seen some pretty rough stuff go by in the ER once or twice while helping out, so she paid it little to no mind. The appearance of the admittedly somewhat disturbing image produced no effect on her, either. She was also far too zoned in to notice the laughter coming from the back of the class, as well as the question that followed suit. She did, however, hear and understand the teacher's.
Hmmm. So basically an arrow, huh? Well, first was checking how the victim was doing, right? Heartbeat, breathing, abnormal pains away from the harmed zone, state of consciousness, general lucidity, unusual weakness, the like. If something else's wrong, deal with that first. If, on the contrary, it's as fine and dandy as can be with a crossbow bolt in your leg, take care of it. First in this case, since the bleeding seemed to have stopped, was to check exactly what part of the leg had been hit. Second was to clean the wound and surrounding area as best as possible. Third, make sure to not tamper with the bolt too much, as the bleeding might start again. Removing the arrow bolt would need surgery, since there was no telling what manner of barbs the thing had or how much damage it had caused. The only thing she could somewhat see is cut the shaft so that it doesn't come out of the leg as far, which'd mostly just make it easier to deal with. Wouldn't get in the way as much and all. After all this is said and done, use a crutch, support the victim or put on a stretcher, getting to the closest emergency-capable clinic or hospital ASAP.
After finishing her train of reasoning, Helena focused on Doctor Sophos again, slowly moving her right hand up to answer.