What do you think she should have done and said as a response?
For my opinion on it; I know what I feel that she should've done. I feel like she should've first posted about how badly she feels for the victims of this. I find her saying what she did was very... meh. I don't disagree with her feeling emotionally distraught, but I think she could use her platform to better support the victims and their families. She wasn't injured in this, and her first priority should be to support those who were. I don't think she has to interject herself into the political discourse yet, because she could still be processing what she feels in that regard. But she has a opportunity to use her platform, even if she abstains from the political side, she has to support those fans.
Other topic:
Islam is a religion that is extremist in nature (at the moment). While Christians and their religion also has extreme scripture, but most Christians don't follow it, obviously. Islam is different. It is used as a platform for that kind of behavior and actions, and thus needs to be viewed differently. It would be foolish to say everyone who follows Islam is that extreme, but it is undeniable that the religion is used to radicalize and is responsible for extremism. I don't believe the religion itself has to disappear, but it needs to be modernized like Christianity was.
Which is why, even as a liberal (basically a socialist) I believe that the travel ban wasn't a bad idea. I didn't like it's iteration of complete denial, but being cautious with it is a good idea. At least for a little while, till the region calms down. Either way I would like to see us defeat IS, but then get the hell out of the Middle East... We, as a nation, have overthrown enough governments and caused enough instability in the region. We are a big reason for why they are attacking us. But that's a different conversation for a different thread.