Hi Brain, welcome to the forums!
That's an interesting observation, and I definitely see where you're coming from with it. So, allow me to get in depth on where I was coming from in writing it.
Brian does indeed love his daughter and is worried about her, this much is obvious. However, Erica is a grown woman (32 during this game, in fact), she's tough, stubborn, good at her job as well as dedicated to it, and she doesn't abandon the people she cares about, especially when they need her and are in danger. It's why she did everything she did to try and save Scott. Brian knows his daughter, and he knows that even if he asked, she'd never just give up, not a chance. She's chosen this career, this life, and regardless of the danger, she isn't going to quit because he asks her to, and he respects her choices (nor, in my opinion,
should he ask, but that's a tangent into the feminist side of things, which wasn't your question).
So, his daughter is in the middle of this, it IS dangerous, and she's going to see it through: he knows all this. He was a cop himself, he also understands where she's coming from, her mindset. But she calls him because she's freaking out over what she's just now seen. The best thing he can do, and what Erica needs from him, is something to distract her for a minute, calm her down, and at the same time remind her that she IS tough as nails and can get through this. It's not about giving her the tools for success--that's a by-product of giving her the tools to
survive. There's no chance she's going to leave this situation, so he's doing what he can to make sure she gets through it.
And he does remind her to be careful, that he loves and doesn't want to lose her, and to pursue justice and not revenge (ostensibly the more reckless and dangerous goal of the two), after she's recovered.
So, I hope that helps shed some light on their conversation and why he says what he says to her. I'm really glad to hear you're enjoying the game!