"Brave? I don't know about that. I mean...what's the fucking point if you have to just go through everything alone all the time? I don't wanna live like that. And I don't want any more of my friends to die."

That's really where it is; her protectiveness is genuine because she cares, but she also just doesn't want more endless death. Sure, she'll kill a bunch of people if she needs to, and she won't stop until she finds and kills Abby. And she's aware at least on some level that she's put Dina in too much danger and they could both die. But it's never been that she doesn't care.

"I guess you're from a way better place than here, so you wouldn't have to even think about it."