[~Misguided Ghosts~]

Well, as far as seeing someone themselves, if you think that they are in any danger, you can always tell someone that will be able to get them help, such as a nearby professor, or, well security, because at least then she would be safe from doing any damage.

My outlook on it is this, it's better to say something to someone, rather than to leave them there to do it and risk something happening. Of course, if they have a weapon, you'll want to address whether it is safe for you to go in or not, but if it is not safe for you, a security official or someone from the health center may know how to adequately handle it better. They ARE doing it in an open space, after all, so there is always the risk of someone who is not so kind seeing before you.