Your friend may have had a valid point that she should have known about the tickets, but it also sounds like she over-reacted. Which pretty much undermined any chance she had of her coworkers and supervisor seeing things from her point of view. I would let it drop.
Sadly, if she keeps overreacting to things, it's likely that she'll continue to be left out of things. Which tends to be a self-perpetuating cycle.
If a situation like this happens again, she should plan out in her head what she's going to say and practice being calm about it. Only then should she approach her coworkers.
And I would work on rebuilding some of the relationships
in the office. It sounds like she's at odds with her coworkers *and* her boss. And that can be extremely career limiting.
I had a job where I hated my boss, and I pretty much made it known how I felt.
Technically, I was in the "right." He was a terrible boss and everyone knew it. But I had such a bad attitude, it ended up hurting *me* in the end. I got a reputation around the office as someone who could be difficult and unpleasant. With time and distance, I realize that I should have handled it better. The next time I had a bad boss, I worked on my attitude about it. And it made interacting with my coworkers easier, and I was just happier in general.
When you think like a duck and let things roll off of your back, you end up benefiting yourself in the end.