I'm having the exact same situation but on a bus instead. I went into a situational opener with her:
ME: "The bus was horribly crowded wasn't it?" (When we get off)
HB10: "Yeah it was....
blah, blah, blah"
ME: "Yeah. But hey, I need a quick opinion on something...(launch into opinion opener)"
HB10: "Well I think....
blah, blah, blah"
And so it goes. I already established that she's German and from Dusseldorf and likes to watch soccer. Good thing abt this situation is that the HB10 is on the bus every morning. Bad thing is that the logistics are fucked. The bus is usually crowded and I can usually only speak to the HB10 when I get off and the window of opportunity to game her is small as I gotta catch the train and she goes to another direction. So progress is short and slow but it is moving.
Hope this helps
