It seems that you have reached the heart of the problem. Most of us are miles away from that sort of threat. When the word is out that people are out there looking to murder you, it is immensely stressful. You cant eat or sleep.

If I was in her place I would have fled to a different city taking a few days off from work or simply given up the activism to reduce it to a level where the mob would not have bothered that much.

Note: Those who think that she could have managed to conceal her identity, why dont you take her work forward ? Whatever she did you too could do it from safety of USA. (Rhetorical challenge of course).