Rose
You ain't psychic and you can't save everybody. You saved a bunch of little kids. Now, I'm not saying the kids lives were more important than Quentin. Hell, I always leave a battle kicking myself that I couldn't save everyone.
Now, I could tell you that you can't change it and that you'll have to get over it eventually, but you know all that, don't you?
You're a good kid, Rosie, and I love you. I'm proud of you.