So, I hooked up with my friend's roommate on the New Years Eve and we were supposed to grab some beer tonight. After 10 minutes of waiting I got the text saying that she is very sorry, but she couldn't show up. How should I respond without acting too needy or butthurt? There is still a small chance that something serious was actually going on.

EDIT: Hey guys, thanks for your help. My answer was "It's cool, shit happens" and I just got a message: "I hope you are not upset and we will see each other soon". So, there may be still some hope :)