Arming her or her mother will not help. Sixty percent of the guns recovered from murder scenes in New York city were legally purchased by somebody in a gunshop in the American south. There are no weapons smuggled into this country. There are no weapons manufactured in illegal underground factories. Every gun store that has been in business for any length of time knows of at least one instance in which it sold a murder weapon to somebody.
Guns are a pollution problem.
You indignantly protest that free enterprise gives you the right to maintain your plastics factory on the banks of the same river on which I live downstream from you. But you refuse to take any responsibility for the PCB's which poison my drinking water. We are all connected by an invisible strand of responsibility. The actions you take may affect me in ways you do not even see, and vice versa. In the same way that Darwin was able to trace a relationship between the flowers in a field and the number of cats in a nearby village, your lifestyle in White River Junction, which appears effortless to you, is paid for by the six year old on rollerskates.