"That's a good age to be at for a girl. Sorry you've been through so much so soon, but it just means you're stronger than most people. And if you have friends here, that'll only help you in the long run. Took me a long time to figure out you can't always go it alone. Even if no one came with you, you've got people now."
Bruce had this sense of potential from Cassie, like the girl was so much more capable than she realized. She was fierce and determined, or had the potential to be, but Bruce wanted to help her hone that. She wouldn't be a new Robin. If they were stuck, that time was gone. But the guerilla warfare tactics he could and would teach her would help her in her fight. Theatricality would only get her so far, so she needed the other skills too.
As they rounded the corner to the kitchen, he spoke again.
"Believe it or not, I trained another girl who was around your age, once."