It's dath ilan, Gregoria. Very few people are going to try to kill anyone, and the ones who do will be swarmed by bystanders after a five-second pause while they reinvent the concept of everybody commits to swarm the killer after 5 other people make the same commitment.
Why is she grabbing a bunch of stuff, though? Was she planning to use it for something? Why would you have to grab something in order to use it? Does this have something to do with that 'own' stuff that nobody has explained to Keltham how to experimentally discern as a perceptible property of objects?