I felt for her. She was nervous laughing in a truly bizarre situation.
People don't always react logically. I know I laughed when I told people a mutual friend had been killed. You can't control it.
I get that. I'm a victim of it too, actually. I may have took her tone the wrong way because I get really uptight and sensitive in situations like these but I hope it really was nervous laughter.
That post was from a few days ago, it is warning that there would be a terrorist attack in Paris today, that there would be explosions, over 100 people dead at a theatre, etc basically describing what just happened and that we couldn't do anything about it, it was already planned.