The Soldier can just be stupidly proud of her for getting out and getting better-- in a distant sort of way, since it's not like it knows her and has the right to really feel that way-- because yeah, it knows about that. Even if it's still not a person with a name (and doesn't want to be, okay; it doesn't), it's still gotten better at interacting with them. Marginally. It has two whole friends, that is progress.

The statement makes it blink, then give her a baffled look. "No. I'm a weapon."

The Soldier may not have self-esteem as such, but at least it doesn't think quite that badly of itself. A weapon is at least harmless until it's pointed at someone.