@flannan
I think it's more he's trying to teach her how to survive the cold, hard truth of the world, aka it isn't all sunshine and rainbows.
"Know that everything you do has consequences" kind of thing, she's got a ton of wide eyed idealism (which he implies is his teammate's fault), while reality is harsh, and if you aren't careful, it will destroy you.
Basically, he's kind of a jerk to her, but by doing so, he's teaching her how to stand on her own two feet but more importantly, he's trying to get her to temper her idealism with cold, hard reality, absolute idealism means you get taken advantage of after all.