<human>: Condense the text into a few key points

I've been hooking up with, sexting, and having phone sex with a girl for the last two months. She's always really loved children and is very close to her 3 nieces. I'm 17, she's 16. We were talking last night after a really intense phone sex session and she started talking about her nieces, something I'm fine talking about. However, when I brought up that she'd be a good mom some day, she went kid-crazy. All she started talking about is how she wants to have children with me, and we don't really know each other. I totally don't want kids ever, especially with this girl, because she seems a little unstable. Essentially I need a way to either salvage the relationship or break it off, without anyone getting emotionally hurt.
<bot>: Some crazy girl I'm fucking wants kids, I don't even want to think about it. How do I fix without hurting her?