What she did was stupid and hopefully she'll learn something from the experience.
It would have been a crass thing to do even if it had just been done with nobody other than her friends and collegues seeing it. With social media uploading pictures like that is simply asking for trouble.
I do think that death threats, rape threats and the like are uncalled for but it seems that people are happy to make threats like that, from the anonymity and distance of the internet, which they wouldn't make in a face to face situation because the chances of them having a visit from the police to discuss their threats is very remote.
Making threats like that can be dangerous because you never know how the person that is on the receiving end of them might react. There's been a situation going on in the states recently where the youngster on the receiving end had to be put on suicide watch because of the threats that were being made against them.
With more recent wars then even civilians can get caught up in them because of the types of weapons that get used but what if you went back to times where they didn't have them. Would you feel the same way as someone that could get bombed or shot would feel if the soldiers only had swords, or would you simply hide until the fighting was over and simply take it as an interuption to your day to day life. How must people have felt when the first weapons were developed that allowed you to kill people at a distance compared to when you simply had to stay as far away from the people that were doing the killing.
Not sure I'd I'd want to go back in time and change things, other than maybe to stop myself doing what with hindsight were mistakes. If I could go back in time and just observe things then I'd probably go back and watch the Wright brothers doing their first flight or plant a homing device on Amelia Earhart's plane so that I could track it and find out what actually happened to her.