To be honest I've always found fear a poor reason for anyone to train. Fear of being attacked, of getting hurt... Fear leads to a negative approach to training.

It is much better to train because of the enjoyment of training. We'd all like people we know to stay safe, but as iaibear said better to learn a few moves and go over them once in a while rather than expect someone to commit to training long term. As I said, someone who trains purely out of fear won't last at training and will have a negative relationship with martial arts. The people I know who have stuck at MA for the long term are people who love training, not people who lived in state of perpetual fear.

Hope she's ok.
"Let your food be your medicine, and your medicine be your food" Hippocrates.