Should I comment to this christian status update on facebook?

Here is what my sister-in-law stated: “is remembering 9/11….God, please continue to bless America, even when we don’t deserve it. Love to all!”

I find it offensive. I’m agnostic. I’ve never been a fan of God bless America because I don’t think god would choose sides, but it’s fine as long as people truly don’t intend to exclude the rest of the world and use the statement as a patriotic, proud kind of statement. I’m assuming she thinks we don’t deserve it because of some political junk with Obama. Which I don’t think god would pick sides in politics either. Does god just decide who gets blessed and who doesn’t. Why are there all these innocent children dying of terminal diseases, starvation,etc…? Her statement sounds judgmental, isn’t that a no no for Christians?

What if anything should I comment back?