hmyea, I mistyped and meant no german greeting, but actually changed my mind just now
but what I mean was that the german might make her think you see here as 'the german girl' only
and have some stereotypical image of germans in general. maybe use some variation in your greetings
(one this this, the next another)

actually just was talking sh** kinda, just what came up in my mind without further structured thinkin ...

anyways, it doesn't need much planing, if you do it'll seem to forced or unnatural, just let yourself go loose
and talk about hobbies, or school or just say some kind of 'hi' and see what happens, but when you start to feel uneasy speaking just say nothing and stay where you are and respond to what she says

anyways I dunno lol