I'ma tell you though, though you want like country/rock stuff (not the stuff I listen to), the type of music for this cause that has a better effect is old (throwback) familiar music. For example, since we're in 2005, if you would throw on some Jodeci, some 12 Play R.Kelly, H-Town, Guy, or some old Donell Jones (who were prominent in the 90s)...that's where you get the "I love that song!" response. You throw on something she's never heard and it's like, "This is a good song" and that's pretty much it. She may even know the words to the old song, may like the artist and have followed him/her, etc. A new song / new artist, you may have just introduced her to her new favorite, but that's it. The old song brings back memories.
